Every dog owner knows how hard it can be to say no to "puppy-dog eyes," but a new study shines light on how canine facial expressions evolved and why humans are able to understand them so well.

Researchers introduce Cheese3D, an AI tool that tracks mouse facial expressions to predict brain states and anesthesia depth with EEG accuracy.

A new study suggests that coyotes, like the ones seen here, have the same face muscle as dogs that's used to make pleading "puppy eyes." jefferykarafa via iNaturalist under CC BY-NC 4.0 The adorable ...

New preliminary data offers insight into why we may find dogs to be so darn lovable. A study found that dogs generally have faster facial muscles than wolves—muscles that allow them to quickly react ...

Living alongside humans changed both how dogs behave and how they look. Research shows that domestic dogs developed a small facial muscle that helps them create the familiar “puppy dog eyes” ...

Many people notice expression lines long before they think about cosmetic treatments. A faint crease between the eyebrows. Fine lines across the forehead that seem deeper in the morning light. These ...