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Food Sharing in Dogs
Familiar dogs prompt generosity more than unknown dogs

Dogs will give food to other dogs. Okay, maybe your dogs don’t show this tendency at home enough for you to believe it, but in laboratory settings, it happens. (It happens in other species, too, especially in various primates and in rats.) A recent study of this behavior found that the details of the experimental situation influence whether dogs choose to give food to other dogs or not. 

“Task Differences and Prosociality; Investigating Pet Dogs’ Prosocial Preferences in a Token Choice Paradigm” investigated prosocial behavior—voluntary behavior that benefits others. In the study, dogs were trained to touch a token with their nose to deliver food to another dog who was in an enclosure, or touch another token that resulted in nothing happening. This is a different experimental design than has previously been used in which a dog could pull a shelf with food on it so that the food reached a dog in another enclosure, or pull an empty shelf.

In the experiment with the tokens, sometimes the dog in the enclosure was one that the “giving” dog lives with, sometimes it was an unfamiliar dog and sometimes the enclosure was empty. In some trials, there was a dog next to them when they were choosing whether to touch the token to give food away. Sometimes they were alone when making their choice.

The study found that 1) Dogs were more likely to give food to dogs who they live with than to dogs who are strangers. 2) Having another dog with them made them more generous, meaning that they were more likely to give food when they were with another dog rather than when they were alone.

To be fair, the dogs were not literally sharing the food out of their own bowl. They were choosing to act so that food would be given to another dog, but they didn’t lose out on any food by giving to the other dog. Still, it’s nice to know that dogs can share food, even if what we most appreciate about them is their ability to share love!

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Karen B. London, PhD, is a Certified Applied Animal Behaviorist and Certified Professional Dog Trainer who specializes in working with dogs with serious behavioral problems, including aggression. She is the author of five books on canine training and behavior.

photo by dogsbylori/Flickr

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