News: Guest Posts
Does it smell weird in here to you?
You know what I’m talking about. That nagging feeling that something smells “different,” but you just can’t put a finger on it. This has been my life for the last three days. Day after day, I’d enter the living room and think, “Did it always smell like that in here? It smells different, right? What is that!?”
On the fourth day, I finally sat down on the couch to read a book. On the coffee table before me sat a bowl of chestnuts. They had yet to be roasted. “Chestnuts don’t have a smell,” I thought. To the right of the chestnuts, the remote. Electronics, also void of smell (although my Game Boy got moldy, and that smelled). Then, I saw it. Next to the remote sat the biggest, most obvious thing on the table, the centerpiece you might say. A large, overripe cantaloupe. It had been there for 6 days and with the radiator pumping out heat (because it is so cold!), the cantaloupe was starting to mush, and that mush was permeating the air and my nostrils. How could I miss it? It was the most prominent thing in the room. Yet day after day, I missed that the gnarly cantaloupe was behind the new stench.
That’s how I feel about dogs. Not that they are starting to smell (although some of them might be), but that despite them being major parts of our lives, we can overlook the important bits.
I left 2013 by posing a question: How Well Do You Know Your Dog? Part 1. The answer: If judging by smell, you know your dog pretty well. In one study, people could identify the smell of their dog compared to an unknown dog in a “smell test.” I finished Part 1 suggesting that while we might be attuned to some nuanced bits of our dogs — like their smell — we’re not attuned to all parts of them, like behavior. I’ll explain.
Is Snoopy happy?
We know happy! But…
But fear was different. Study participants who were dog professionals did a better job identifying fear compared to both dog owners and people with little dog experience. The authors suggest that “professional experience with dogs aids proficiency in interpretations of fearful behavior.” It didn’t matter how many years the dog professionals had spent working with dogs; they had the same proficiency in identifying fear.
So why did dog professionals do so much better in identifying fear? One reason could be that professionals looked at more dog body parts for clues, such as the eyes, ears, mouth and tongue, while non-professionals looked at fewer body parts, focusing primarily on legs, paws and tails. More details in the figure provided by Wan et al. (2012).
The researchers summarize: “The results of the current study are among the first to demonstrate that the perception of an emotion in dogs can be associated with human observers’ level of dog experience.”
While many of us love dogs to pieces (Buzzfeed reminds me of this on a daily basis), noticing and interpreting their subtle behaviors can take practice. That’s okay! Behavior observation can be learned.
Keeping an eye out for fear
What does fear look like? It can include a wide variety of body parts and body postures. Wan and colleagues explain, “…fearful dogs are said to reduce their body size – crouching into a low posture, flattening their ears, and holding their tails in a low position. Shaking, yawning, salivation, freezing, panting, paw-lifting, and vocalizing are examples of other behaviors that have been associated with fear in dogs.”
Maybe, in certain contexts, you notice fearful behaviors in your own dog and want to help decrease it. Like gymnasts, fear is flexible. Just as dogs can sensitize to stimuli, so too can they habituate. With classical- and operant-conditioning techniques, behavior management, and maybe some professional assistance (see below), dogs can have a modified outlook on life. What does a modified outlook look like? Check out Masey’s progress over at Reactive Champion.
Sometimes we just can’t piece it together that the cantaloupe smells. But of course, a trained fruit expert would exclaim, “Julie! Your cantaloupe is rotting.” You see where I’m going with this. Sometimes dogs are fearful, and the clues are right in front of us, like a rotting cantaloupe. Learn to recognize dog fear behavior. This is a blog about dogs after all. Not cantaloupe.
Photo: a muddy dog…..is a happy dog via bambe1964; National. Flickr Creative Commons
References & Recommended Reading
This article first appeared on DogSpies, Scientific American. Used with permission.
Dog's Life: Lifestyle
They respond to photos of familiar faces
You know your dog knows who you are, right? That enthusiastic greeting when you come home is proof positive that he recognizes you. But what clues him in to your identity—the sound of your footsteps, your voice, your unique smell, that palpable charm? That may all be possible, but recent evidence suggests that dogs can actually recognize faces.
The ability to recognize faces is important for social animals. When living in a group, identifying individual members and being able to distinguish them from one another is essential for keeping track of specific social interactions. For dogs as well as humans, this skill is highly developed.
In a recent study called How dogs scan familiar and inverted faces: an eye movement study published in the journal Animal Cognition, researchers investigated facial recognition in the domestic dog. They concluded that:
These results are similar to those found when studying humans and other primates with the same technique used in this study—tracking eye movement. Across the many species that have been studied previously, primates are more interested and spend more time looking at faces of members of their own species. Similarly, primates look at the eyes of faces, just as dogs did.
This study also investigated dogs’ responses to faces that are shown upside down. Such inversions are interesting to cognitive scientists because there is evidence in other species that inverted faces are not processed the same way as faces that are oriented in the normal way.
Humans are able to identify faces quickly and accurately because we have a mechanism to identify faces that is separate from the system used to identify other sorts of objects. The face is looked at as a complete structure with tiny differences in the configuration of its parts rather than as separate parts as we do with other objects. When faces are upside down, the process of facial recognition is disrupted and we are forced to identify the face as we would other objects, as parts that must be looked at and evaluated individually rather than as a whole. The facial recognition that is usually so effective doesn’t work well on inverted faces. They are processed as other sorts of objects are—piece by piece—rather than as an integrated whole, which is why we are not as good at identifying faces in this way.
Dogs, according to this study, fixate on upside down faces longer, suggesting that it is more difficult for them to identify them than when they are upright. They do spend a lot of time looking at the eyes even in upside down faces, which suggests that they do recognize these images as faces despite their position.
Because dogs have lived with humans for so long, they provide an interesting model for studying facial recognition since they are adept at identifying individual faces in their own as well as in our species.
Good Dog: Studies & Research
Six leading canine researchers talk about their work.
I think you would have fun playing Mad Libs with your dog’s life, filling in the blanks to match Siena or Diego’s unique personality and interests. After all, your intimate knowledge of your dog is unparalleled. You know what he thinks of the neighbor’s dog, and whether he prefers balls to sticks or carrots to apples. But our canine experts also know your dog, albeit in a different way. Scholars who focus on canine behavior, cognition and wellbeing, they collectively have more than a century of experience in the fields of veterinary medicine, animal behavior, animal welfare, zoology, anthrozoology and psychology under their belts. Read on to find out what they think about dogs, and what they want you to know.
What common misconceptions do people have about dogs?
McConnell: Often it seems that we get things backwards with dogs. Sometimes it seems like people think of dogs as furry people, when they’re not. The flip side is that there are similarities between dogs and humans, and people need to be compassionate and understanding of what a dog is going through; those are often the times people dismiss the similarities.
For example, dogs need social contact and social approval, and a lot of what they do is motivated by fear. These are all very human ways of being, and I think people forget to extend these attributions to dogs; instead, they ascribe other motivations, like wanting to be dominant or trying to beat the system. On the other hand, dogs can be less like us than people tend to think. We use hugging to communicate love, approval and maybe support, whereas dogs often see that as threatening.
Otto: That dogs are perfectly happy to sit on a couch all the time. I think they learn to adjust to that, but are they reaching their potential? And is the relationship reaching its potential? I love teaching tricks because you can spend five minutes a day with a dog or a cat and do things that stretch their brains and change your relationship. I think that is such an important piece of the relationship, and it’s something we’re not routinely giving our dogs.
McGreevy: That dogs want to please humans—almost as though dogs are hard-wired to makes us happy. This beguiling notion paradoxically excuses all sorts of abuse when people interpret training failures as willful disobedience. Dogs want to have fun with us, for sure, but that doesn’t mean they get their kicks from being slaves to our needs, wants, desires and foibles.
Horowitz: That dogs understand right away what’s going on in a household. In other words, if you say something once, it’s somehow clear to them how they are supposed to behave, what you’d like them to do and how the day is going to go. Dogs are pretty flexible, and they adapt fairly well, but a lot of what we call misbehavior is just lack of mutual understanding: ours of the dog’s needs and abilities and theirs of what we expect of them. I find that a bit disheartening.
Another misconception is the alpha dog concept. For some reason, the concept of the hierarchy of the pack was a compelling idea that stuck and was popularized. It’s not only really damaging and simplifying, it’s wrong by analogy.
Miklósi: That the dog is a wolf and also that the dog is a child. I like to say that dogs are dogs, and that’s the most difficult way to try and conceptualize dogs!
Bradshaw: That dogs are reconstructed wolves. I keep coming across journalists who interview me and still believe the old stuff about keeping a dog in its place—that the dog wants to dominate you and take over your house. They’ve read this stuff, taken it in and believe it to be true. Ultimately, it’s bad for dogs. When I speak with people, they seem interested to learn that the UK military trains dogs, whether patrol or sniffer dogs, with play as the reward; punishment-based training has been phased out. When people hear that marines know they can train a dog better by playing a game than by hitting, they take note.
What’s your framework for thinking about the dog?
Horowitz: My consideration of the dog is for his umwelt—his perspective. I’m interested in the way the story of domestication and selective breeding combines with the dog’s particular sensory and cognitive abilities to produce the behaviors we see. I’m particularly interested in how we easily interpret those behaviors from an anthropocentric standpoint. Behaviors almost always look different when interpreted from an evolutionary and cognitive standpoint.
Miklósi: When thinking about any species other than ourselves—whether dog, fish or mice—we always have a third-person view. With this in mind, we view the animal based on how it fits into its niche. In our case, the dog’s niche isn’t a rain forest or an ocean but rather, the environment offered by humans. Even if dogs are feral, they are not in the middle of the forest; dogs remain close to humans.
From there, we think about how dogs achieve and maintain relationships with humans. I think this is what makes dogs unique compared to other animals—their relationship with humans is very special.
Bradshaw: I first think about the dog as an emotional animal for whom the primary motivation is to attach to humans. Somehow, through the course of domestication, we have built this into the vast majority of dogs.
The second framework is the dog’s olfactory sense, which we make use of and often take for granted. Dogs’ subjective world is defined, to a large extent, by smell rather than by what something looks like, which is how we define our world. Everybody knows that there are so many uses for the dog’s nose—that when you put your luggage on the conveyer belt in the airport, a dog might sniff it before it’s loaded on the plane—but we don’t readily incorporate their olfaction into our everyday lives with them.
McGreevy: I think of the normal dog as a social athlete and a fun-loving opportunist.
McConnell: Instead of talking about the dog, I find myself wanting to talk about a dog. Dogs are enormously variable, and I see so much frustration and so much suffering because people expect their dog to be one way and the dog behaves in another way.
Just as people are individuals, dogs are individuals. I think it’s critical we understand that we’re not looking at a Golden Retriever or a Border Collie— although I don’t want to dismiss breedrelated traits—but that we’re looking at Frank or Willie or Spot or Martha.
What contributions to the field of dog science are you most proud of?
Bradshaw: When my colleagues and I at Bristol first started exploring separation disorders in dogs, they were thought to be rare—some kind of pathology. All the work we’ve done finds that separation disorders in dogs are not pathologies; they can be a reflection of something normal in dog behavior, which is attachment to people.
Also, my colleagues and I have done a lot of work for sniffer-dog welfare, improving not only the way that detection dogs operate in the field but also the way they are looked after, so they are not just efficient dogs but are happy dogs as well.
McGreevy: My contributions primarily relate to my team’s discoveries in dog behavior, physiology and welfare. We’ve shown how left- and righthandedness in dogs affect a dog’s ability to guide the visually impaired, how dogs’ retinae and brains depend on their skull shapes, and how many breeds’ body shapes predispose them to hip dysplasia. We’ve also developed and validated a scoring system for doggy dementia. On an international level, I helped tackle inherited disorders in dogs—the most preventable form of cruelty—by establishing national surveillance systems, such as VetCompass in the UK and Australia, for veterinarians to report inherited disorders.
Otto: I’m most proud of the Penn Vet Working Dog Center and the research to come. The center evolved out of my work following the health and behavior of the dogs who assisted after 9/11. It’s quite a landmark study; we are now in the 12th year of monitoring and evaluating the health and behavior of these dogs, and we are also working with a human psychologist to explore the ongoing relationship between the dogs and their handlers. This is the foundation for so much more research in the future.
Horowitz: I think that through our research, and the ideas that I developed in Inside of a Dog, I reminded people of the huge interest in understanding the dog’s point of view. In other words, looking at dog behavior from the dog’s side as opposed to from an owner’s perspective or the perspective of a comparative psychologist, who is interested primarily in mapping nonhuman animals to human animals.
So I think for many people, I helped re-spark the interest in the dog qua dog, and I’m very pleased and happy about that.
McConnell: I would say it’s my focus on the natural history of both humans as primates and dogs as canines, and using these evolutionary heritages to explain and enhance our interactions. My two favorite species have always been people and dogs, and I’m as fascinated by our own behavior as I am of canine behavior.
What needs more research or remains unresolved about the dog?
Otto: I have a sense that working dogs, dogs with a purpose and dogs who have things to do live longer and happier lives. Many pet dogs are frustrated, bored, inactive and fat; it kind of amazes me that a lot of dogs’ lives don’t even meet the environmental- stimulation standards required for rodents living in research labs. We need to think about how stimulation, or the lack thereof, affects dogs’ quality of life.
Miklósi: A better understanding of what makes for good social relationships between dogs and humans, particularly cooperation. For example, “working together” might be quite selfish for dogs in that they are working for a reward, like play or food. Alternatively, research could investigate whether cooperation can be organized such that dogs are cooperating for the sake it.
McGreevy: What I call “dogmanship”— the science of how the best dog folk interact with their dogs. I’m also interested in understanding how our behavior frustrates and confuses our dogs.
McConnell: We still need lots of research on communication: how dogs interpret our behavior, how we interpret their behavior and how accurate our perceptions and interpretations really are. I think that’s most important for companion dogs. Nutrition, diet, physiology and behavior need to be researched as well. I think there is so much in these areas that we haven’t explored yet and need to. Also, research could look specifically at aggression and investigate precipitating factors, putting it all on the table: nature, nurture, genetics, physiology and diet, experience, and learning.
Bradshaw: The whole area of the dog’s olfactory abilities is waiting to be properly understood. We use those abilities, but I don’t think we fully understand them. We know very little about the dog’s vomeronasal organ, and we don’t even agree as scientists on when dogs are using it. I don’t know what the implications of this knowledge would be for companion dogs, but sometimes the most exciting findings arise when doing research for the sake of it; practical value is a byproduct.
What do you wish the average dog owner knew about dogs?
Miklósi: You get out what you put in. If you want a dog as a social partner, that doesn’t mean lying in bed together and watching TV, but going out together actively. That could include learning, teaching, talking or solving problems together. I wish people understood that if they do this, they both would have happier lives.
A great example is olfaction. People think that dogs have fantastic abilities when it comes to smell, but that’s an oversimplification. Dogs have a fantastic potential for smelling, but if the dog spends its whole life in an apartment and never uses its nose, then I would assume that dog would have poor smelling abilities.
The same goes for social interactions. If the dog has no experience meeting other dogs or people, or has never had a task, then that dog will not function properly. And I think this is also a welfare issue. In some cases, street dogs who are rescued and taken to Western countries are worse off because they are alone, have no experiences and sleep all day.
Otto: Dogs are smart and their brains need exercise as much as their bodies. People get that they need to take their dog for a walk, but they don’t always think about needing to exercise the dog’s brain.
McGreevy: Most dogs are better communicators than most people. They are our guides; if we want to master dogmanship, we need to know how to read them. Horowitz: The dog deserves a lot more attention and scrutiny by owners and researchers alike. Particularly, attention to what life is like for this animal who has so cooperatively waltzed into our homes. McConnell: As social animals, one of the things we share with dogs is the duality of wanting to be connected to a group and also wanting to be individuals who can pursue their own desires and wishes as best they can. I think the more we can see dogs in this light, the more respectful we will be of dogs— and they of us. I think we’d get along better, and we’d see fewer behavior problems.
Dog's Life: Lifestyle
It influences their orientation during elimination
A new study called Dogs are sensitive to small variations of the Earth’s magnetic field published in the Journal Frontiers in Zoology has demonstrated that dogs can sense and respond to magnetic fields. It is the first time that this has been shown in this species. Researchers found a measurable change in behavior based on the conditions of the magnetic field.
Specifically, they found that under certain conditions, dogs choose to pee and poop with their bodies aligned along the north-south axis and avoided orientation along the east-west axis. They studied 70 dogs from 37 different breeds over a two-year period, observing 1893 defecations and 5582 urinations. Observations were all made while the dogs were off leash and in open fields so that they were not influenced by walls, fences, fire hydrants or other objects.
The researchers collected data on dog directionality (and hopefully all the poop, too) and found that the way dogs face is not just a matter of chance. They ruled out such factors as time of day, angle of the sun and wind conditions. Their analysis found that the Earth’s magnetic field explained dogs’ orientation when doing their business. Interestingly, the pattern only emerged when the magnetic field was stable, which was only about 30 percent of the time. The Earth’s magnetic field can become unstable due to such factors as the variation in solar winds and the sun’s magnetic field. During such periods of instability, dogs did not show a preference for aligning themselves along the north-south axis and oriented randomly.
This research has been written about extensively in the media, possibly because any scientific research that involves potty talk is inherently amusing to journalists. Though the behavior that the researchers studied was elimination, to focus on that is to miss what’s really important about the study.
What I think is so fascinating is the revelation that dogs are able to sense the Earth’s magnetic field and that their behavior is influenced by it. It has been known for a long time that dog senses, particularly the sense of smell, mean that they are responsive to stimuli that we humans aren’t aware of, but the fact that dogs can act, in some manner, as though they have an internal compass is just as fascinating.
Previous studies have found that cattle, deer and foxes sometimes align their bodies with respect to the magnetic field. Sensitivity to the Earth’s magnetic field has previously been demonstrated in species that migrate such as birds and whales, and also in honey bees, whose navigational abilities are legendary.
Of course, people have long asserted that dogs can find their way exceptionally well, and I’ve even known people who said that it was like their dogs had internal compasses. Finding out that dogs can in fact sense the Earth’s magnetic field, just as compasses can, makes their navigational abilities perhaps more understandable, but no less extraordinary. It was in part dogs’ remarkable homing abilities that made the researchers suspect that dogs might be sensitive to the Earth’s magnetic field in the first place.
Why dogs are choosing to orient themselves in this way is the big question, and hopefully future research will pursue it. I look forward to seeing research on that subject as well as experiments investigating other canine behaviors that may be influenced by the Earth’s magnetic field.
Vet Experts Tell Us How
Did you know that the American College of Veterinary Behaviorists (ACVB) has fewer than 50 members? To obtain board certification in this specialty, each has gone beyond a DVM to earn various degrees in applied animal behavior, and has completed a rigorous training program as well.
Decoding Your Dog (Houghton Mifflin Harcourt, January 2014), with sections on canine behavior written by 20 ACVB diplomates, thus represents the expertise of some of the leading experts in the field. Their goal is two-fold: to make sure dog people have scientifically correct information about dog behavior problems and “to correct widespread misinformation.” The volume is well edited by Drs. Debra Horwitz and John Ciribassi and pet journalist Steve Dale; Victoria Stilwell contributed the foreword.
A concerted effort to debunk the many fallacious, pseudoscientif ic notions all too prevalent in the dog world is really long overdue. This book repudiates, in each and every one of its 14 chapters, the theory of dominance— i.e., dogs want to be pack leaders—that has been promulgated for much too long. In “Creating a Mensa Dog,” Dr. Katherine Houpt outlines that theory: “It goes like this: since dogs are essentially domesticated wolves, and wolves have a rigid dominance hierarchy within their pack, the same must be true for dogs. Simple, right? But the thinking turns out to be wrong.” She then goes on to tell us why it is wrong. Similarly, when this concept appears in other chapters, it’s firmly dismissed as a myth with no scientific basis that harms dogs and our relationships with them.
Another adroitly debunked myth is that dogs feel guilty about infractions people find upsetting, such as house soiling. Dogs must know they’ve done something wrong, right? In “Can’t We Just Talk?” Dr. Jacqueline Neilson explains that while to us, cringing may look like guilt, what is actually happening is that dogs see us acting aggressively and do what they wisely do when faced by an angry bully: offer a submissive response. In the fascinating chapter on aggression, Drs. Ilana Reisner and Stefanie Schwartz remind us that dogs are not mean: “There is no revenge or malice in dogs; they are merely using canine tools to respond to social situations.” Also, that aggression is a response to many different triggers, some of which might not be apparent to us. Consequently, it’s imperative that we learn how to read canine body language and methods of communication. Punishment, they say, “is not necessary when you’re managing your dog’s behavior, and at worst is likely to increase anxiety and aggression.” That means no leash pops, alpha rolls or other “in your face” confrontational techniques (as used by a popular TV personality). It is up to us to defuse the situation, and then work on a strategy to fix the problem.
On less dire subjects, it’s good to know Book Reviews that there is no association between “spoiling,” such as allowing a dog to sleep on the bed, and behavior problems. And that dogs rely on “visual and olfactory cues for communication,” which means it’s best to train them with hand signals first, then supplement with verbal cues.
I found the chapter on separation anxiety by Drs. E’Lise Christensen and Karen Overall to be invaluable, particularly their reminder that “only when dogs are calm can they learn new things, including how to be home alone.” With information ranging from the best ways to start out with dogs to helping dogs as they age, this book is appropriate for both novice and seasoned dog people. The editors have done a good job in making the text readable and approachable; each chapter incorporates case studies, and there is a clear organizational format. Recurring sections (“Facts, Not Fiction,” “Is That Really True?”) and review summaries (“What Did We Say?”) neatly encapsulate the various messages. I have a little quibble with the use of the latter phrase, which sounds like a scolding parent’s “What did I tell you!” But that doesn’t detract from my overall admiration for this book. Decoding Your Dog is an important addition to the canine canon, one that will go a long way toward increasing your understanding of your best friend.
Dog's Life: Lifestyle
Center for Pet Safety tests products
Lindsey Wolko knew that dogs are safer in cars if restrained, which is why her cocker spaniel Maggie was in a safety harness the day Wolko braked hard to avoid an accident. Despite that, Maggie was seriously injured and very scared when she slammed into the driver’s seat and her legs became tangled in the harness. She has since fully recovered from the damage to her spine and hips, but many dogs sustain even more serious injuries and not all of them recover.
Since then, Wolko has learned that all too few of the products that are sold to insure dog’s safety actually do what they are supposed to do, in part because they are not properly tested. She is determined to change that in order to keep dogs safer and prevent injuries to them. That’s why she founded the nonprofit Center for Pet Safety.
Preparing to test products involving designing canine crash test dummies in three different sizes. There are model dogs of 25 pounds, 45 pounds, and 75 pounds. All of the crash test dummies have a steel frame and accurately recreate the true center of mass and weight distributions of dogs.
In a recent series of tests that made up the 2013 Harness Crashworthiness Study, most of the canine restraints experienced catastrophic failure. That means that either the restraint allowed the dog to become a projectile or it released the test dog from the restraint. Only one product, the Sleepypod’s Clickit Utility Harness, consistently performed successfully, offering protection to the dog and to other passengers in the car by keeping the dog from leaving the seat.
Has your dog been injured in a car accident despite being restrained with a product that was supposed to offer protection?
In a recent New York Times, Gregory Berns, a neuroscientist and the author of the excellent new book, How Dogs Love Us, writes an intriguing and engrossing editorial, “Dogs Are People, Too” (which was the top “emailed” article in the NYT the day it came out!). Berns and his team at Emory University have been testing dogs, the first of which was Berns’ own rescue dog, Callie, using functional MRIs to measure their brain activity, hoping to decode the canine brain. Unlike other researchers at other universities, the Emory Dog Project was the first to do this and the only ones who perform their research with not only volunteer dogs, but also by following a humane protocol that included “only positive training methods. No sedation. No restraints. If the dogs didn’t want to be in the M.R.I. scanner, they could leave. Same as any human volunteer.” Other researchers also use “purpose-bred” Beagles, an abhorrent practice.
What they discovered was rather amazing. As I noted in the book review in Bark’s Winter issue, “Initial findings showed evidence that dogs empathize with humans and have a theory of mind, and by extension, that the idea that you must be a dog’s pack leader is a mistake.”
In his commentary Berns notes, “Although we are just beginning to answer basic questions about the canine brain, we cannot ignore the striking similarity between dogs and humans in both the structure and function of a key brain region: the caudate nucleus.”
In making his case for the “personhood” of dogs Berns explains that, “The ability to experience positive emotions, like love and attachment, would mean that dogs have a level of sentience comparable to that of a human child. And this ability suggests a rethinking of how we treat dogs.” And that we can’t hide from the evidence shown in the MRIs, dogs, and other animals (like primates) do have emotional lives, just like us. In his book he describes that the defining traits of dogs is their interspecies social intelligence, “an ability to intuit what humans and other animal are thinking,” and furthermore that, “ Dogs’ great social intelligence means that they probably also have a high capacity for empathy. More than intuiting what we think, dogs may also feel what we feel.”
It is then perfectly understandable that he makes the case for granting dogs personhood, as he wrote in the Times piece, “ If we … granted dogs rights of personhood, they would be afforded additional protection against exploitation. Puppy mills, laboratory dogs and dog racing would be banned for violating the basic right of self-determination of a person.”
Read the whole article here, and watch this video and we would love to know your thoughts too. Gregory Berns’ post on Psychology Today, is also of interest.
Dog's Life: Lifestyle
Those little pests are nothing new!
Mummified dogs are not a new archaeological discovery, but finding bloodsucking parasites on them is. Over 400 dog mummies unearthed from the El Deir excavation site in Egypt have been found, and one young dog among them was infested with a number of parasites that have been preserved.
There were over 60 ticks found on this poor dog and there was one louse, too. The scientists who found this dog suspect that a tick-born disease that kills red blood cells was probably responsible for the death of this dog at such a young age. Besides the ticks and the louse, remains of two types of fly larvae were found on it, suggesting that the dog’s body had time to attract carrion flies prior to being mummified.
Mummifying animals was common in ancient Egypt. It was done to provide food and companionship for people in the afterlife and to make sacrifices to the gods, yet nobody is sure of the reasons for the dog mummies at El Deir. It is unclear if they had specific human guardians or how they died. Perhaps they were purposely bred to be sacrificed as cats commonly were, but we just don’t know.
Scientists involved with this excavating project are exploring questions about the source of the dogs. They are also hoping to find more parasites on the dog mummies in order to investigate the origin and spread of diseases and to deepen our understanding of the role of parasites in the history of the species.
Evidence that ancient dogs suffered from ticks, lice and other ectoparasites is prevalent in ancient writings such as those of Aristotle, Homer and Pliny the Elder, but this is the first archaeological evidence that corroborates those texts. It’s certainly no surprise that dogs living a couple of thousand years ago faced the danger and nuisance of ticks and lice. It would be astounding if it were a recent development in the lives of canids, but it’s still interesting to have such concrete evidence.
Dog's Life: Lifestyle
Where are dogs living longest?
It is hard to decide which of the many wonderful qualities of dogs is the best one, but it’s easy for me to say what is the worst thing about dogs: They don’t live long enough. We all wish dogs lived longer and most of us are hungry for information about which factors may give us more time with our dogs. It’s possible that where our dogs live is one such factor.
A state-by-state analysis of dog lifespan shows Montana and South Dakota at the top with dogs living an average of 12.4 years. Other states with long-lived dogs include Oregon, Colorado and Florida where the dogs are typically living over 11 years. In contrast, Mississippi and Alabama have an average lifespan of just over 10 years.
These data come from Banfield Pet Hospital and only include those states in which they have facilities, which means that Wyoming, North Dakota, Maine, Vermont and West Virginia are not included. It also means that the data may only reflect the specific dogs seen in their practices rather than fully representing each state’s dogs.
However, there are a number of reasons that lifespans may vary from state to state. These include nutrition, exercise opportunities, rates of spaying and neutering and the types of disease prevalent in the area. The breeds and sizes of dogs that are most popular in those states may matter, too.
News: Guest Posts
If you live with a dog, then you are familiar with this sound.
Unlike barks, growls and howls — dog sounds that easily take center stage — a dog lapping up water is background, white noise. Dog drinking attracts little attention until you unexpectedly step in a puddle of slopped-over water while wearing socks.
A closer look reveals there is nothing commonplace about how dogs drink. Instead, to ingest liquids, the tongue seems to perform almost acrobatic feats. Slow-motion footage of dogs lapping up water shows that the tongue curls backward to create a spoon shape. The below video from of The Secret Life of Dogs, a Nat Geo WILD special that premiered Sunday, August 25, hints at the intricacies of how dogs drink.
From the above clip, it could appear that by curling the tongue backward and filling the spoon-shaped tongue with water, dogs drink by scooping, or spooning, liquids into their mouths. But a paper published by Crompton and Musinsky in Biology Letters in 2011, finds there is more to the story.
While dog tongues do assume a spoon-shaped position while drinking, much of that liquid falls out. Using high-speed and x-ray video recordings of a dog lapping up a colored liquid, instead of clear water, the researchers could see that the tip of the dog’s tongue was actually drawing a column of water up into the mouth, and this column of water is what dogs are drinking. This observation is difficult to make from slow-motion videos of dogs drinking clear liquids like water. By taking x-ray video of a dog drinking a dark liquid, in this case a mixture of milk and barium, Crompton and Musinsky could see that dogs draw up liquid by the tip of the tongue, and the tongue then traps previously lapped water onto the roof of the mouth so the dog can bring more water in without losing what it already has.
Ultimately, the researchers found that dogs use the same drinking technique as cats. This might be surprising because dogs make such a mess while drinking, and cats seem to emulate the daintiness of royalty, but dog tongues dive deeper into liquids thereby giving off more spray.
The researchers concluded that dogs and cats share the same basic mechanism for drinking: “adhesion of liquid to the tongue rather than ‘scooping’ by the tongue.” I’ll drink to that.
Additional Reading and References
Crompton and Musinsky. 2011. How Dogs Lap: Ingestion and Intraoral Transport in Canis familiaris. Biology Letters 7, 882–884.
About the Author
Julie Hecht, MSc, is a canine behavioral researcher and science writer in New York City. She writes a behavior column for The Bark. She would really like to meet your dog. Follow on Dog Spies at Facebook and Twitter @DogSpies | DogSpies.com
This story was originally published by Scientific American. Reprinted with permission.
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