What makes your dog so darn cute? Scientists say 'puppy dog eyes' are all about the eyebrows. On National Dog Day, see how man's best friend developed moveable brows over millennia of domestication.
What makes your dog so darn cute? Scientists say it’s all about the eyebrows. Research has shown that over thousands of years of domestication, dogs developed moveable brows and other facial features that are attractive to people.In fact, “puppy dog eyes'' are a thing today because our ancestors favored canines with expressive eyebrows that make their eyes look bigger over canines with less expressive anatomical features, according to one 2019 study.
Dogs’ levator anguli oculi medialis and retractor anguli oculi lateralis muscles help create those expressive eyes, according to the study.Wolves can’t do much with their eyes beyond opening and closing them—and squinting. They don’t have the necessary muscles.Neither do Siberian huskies. They’re more closely related to wolves than other dog breeds.Dogs have also evolved to make eye contact with humans when they need guidance—another thing wolves can’t do.
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