The dog's eyes evolved to attract humans

If a dog's eyes seem to tell you something or ask for your attention, it may be an evolutionary way of manipulating your feelings.

The researchers found that muscle evolution around the dog's eyes allowed them to create expressions that were particularly appealing to humans.

A small facial muscle allows the dog's eye to mimic a "baby-like" expression, which promotes a "culture response."

The study called the "puppy eye" to help domesticated dogs to combine with humans.

Previous studies have demonstrated how this canine expression can appeal to humans, but this study in the United Kingdom and the United States suggests that anatomical changes have occurred around the dog's eyes, making it possible.

This allows the dog to create what the researchers call "expressive eyebrows" and "creatives for creating human communication."

[When dogs exercise, it seems to have caused a strong desire for humans to take care of them," the study was co-authored by Dr. Juliane Kaminski of the University of Portsmouth.

This muscle movement makes the dog's eyes "looking bigger, more like a baby, and similar to the movements that humans produce when they are sad."

She said that humans have an "unconscious preference" to protect and breed dogs with this attractive character, giving them an evolutionary advantage and reinforcing this change in future generations.

"There is evidence that dogs accumulate a group of muscles from the wolves to raise their innerbrows," Dr. Kaminski said in a study published in the Proceedings of the National Academy of Sciences.

Research from researchers in the United Kingdom and the United States of Anatomy and Comparative Psychology has shown that facial changes have developed dogs that have lived with humans for thousands of years.

Previous studies have shown that dogs are more likely to use this "puppy eye" expression when humans are observing them - suggesting that this is a deliberate act and is for human consumption.

Anatomist and co-author of the report, Professor Anne Burrows of Duquesne University, said that from an evolutionary perspective, the dog's facial muscle changes are "very fast" and may be "directly related to the human social interaction of the dog."

Professor Bridget Waller of the University of Portsmouth said the findings showed "how important faces are in attracting our attention and how powerful facial expressions are in social interaction."

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2019.08.05

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