Dogs change their facial expressions when they know people are looking at them—perhaps in an effort to communicate. For instance, canines in the study would make the classic "sad puppy face"—raising ...

Facial expressions arise from brain networks that encode slow, context-rich meaning and fast muscle control on different time scales, keeping smiles and threats socially precise.

Cats communicate through subtle expressions. Experts explain what your feline may be trying to tell you.

Scientists have found out that test subjects almost always perceive the facial expression on Leonardo da Vinci's famous painting as happy, thus calling into question a long-held assumption in art ...

WASHINGTON – Creases and furrows on someone's face may put a wrinkle in our ability to properly judge his or her emotions, a new study suggests. In the study, participants viewed photographs of 64 ...