If a mouse is in a lot of pain, an experienced handler may see it in the animal’s facial expression—its narrowed eyes and bulging cheeks. But, subtler facial expressions may be more difficult to match ...

This story appears in the October 2017 issue of National Geographic magazine. Let’s face it: When it comes to expressions, a horse is no one-trick pony. Recent findings have revealed that our ...

Doctors may soon be able to diagnose a severe form of depression simply by looking at someone's face. This type of depression, called melancholia, is marked by a complete loss of interest in daily ...

Most children of this age: Exchange sounds, facial expressions, or gestures with ... Associate gestures with simple words and two-word phrases, like "hi" and "bye-bye" Use vocal and non-vocal ...