It’s been known for a long time that yawning is contagious in various species of primates, including humans. (It’s actually highly contagious. If it were as easy to catch a cold or malaria, it would be all but impossible to stay healthy.) In recent years, the contagious nature of yawns between dogs and people has been a research subject of considerable interest.
The study was an attempt to demonstrate that contagious yawning in dogs is different than that same phenomenon in primates, but the data say otherwise. In primates, yawn contagion indicates that the observer has empathy for the yawner. It was thought that in dogs, yawns were induced by a hard-wired behavioral pattern that was exhibited in response to a releasing stimulus. However, the observation that dogs yawned more in response the sound of familiar yawns than to the sounds of unfamiliar yawns suggests that empathy may play a role in the contagion.
Reading and writing about this subject has given me a case of the yawns, along with the dog right next to me. Did you yawn while reading this, and if so, did your dog follow suit?
Karen B. London, PhD, is a Certified Applied Animal Behaviorist and Certified Professional Dog Trainer whose clinical work over the last 17 years has focused on the evaluation and treatment of serious behavioral problems in dogs, especially aggression. Karen has been writing the behavior column for The Bark since 2012 and wrote The Bark’s training column and various other articles for eight years before that. She is an adjunct professor in the Department of Biological Sciences at Northern Arizona University, and teaches a tropical field biology course in Costa Rica. Karen writes an animal column, The London Zoo, which appear in The Arizona Daily Sun and is the author of five books on canine training and behavior. She is working on her next book, which she expects to be published in 2017.