If you are among the many people who have always thought that people looked like their dogs, you have probably enjoyed hearing recent research supporting the claim. Now there’s new information to allow you to bask in being officially correct. Research by Sadahiko Nakajima (Dogs and Owners Resemble Each Other in the Eye Region) not only provides additional evidence for the resemblance between dogs and their people, but narrows it down to one specific facial area—the eye region.
In this study, over 500 undergraduate students were shown photographs of people and dogs. One set of 20 photos was of people and their own dogs, but the other set contained photos of a person with a dog belonging to someone else in the study. There were a variety of breeds represented, and the people were all Japanese men and women.
Over two-thirds of the participants in the study said that the set of photographs of fake pairs of dogs and people showed individuals with less resemblance to each other than the set of photographs that contained the actual dog-person pairs. This level of proper identification was possible even when the mouths of the people were covered by black bars. The students were just as accurate when the only part of the dogs and people they could see was the eye region.
However, if the eye areas of dogs and people were masked by black bars, there was a decline in their ability to determine which set of photographs contained real dog-person pairs, and which were made up of dogs and people who did not go together. In fact, with the eyes obscured, participants in the study did no better at identifying dogs and people who belonged together than if they were just guessing. That is, their success rate dropped to about 50 percent—exactly what would be predicted by chance. This study suggests that dogs and their people resemble each other in the region of their eyes.
An interesting question related to this study is how dogs and people come to resemble each other in this way. Do people tend to choose dogs whose eyes resemble their own, or is there a similarity in expressions such as the type or intensity of emotion that can be seen in them?
I once had a dog whose eyes looked so much like mine that many people who saw us together commented on it, but I never thought about it as a regular pattern. Do you and your dog’s eyes look the same?