Legs raised and kicking, along with quick breathing and a pained expression, could be a sign that baby is either a bit frustrated or that they need winding. Whatever you’re saying or doing ...

* Simply place two fingers on each corner of your mouth and try to smile against the resistance they create. * Hold each ...

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 ...

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 ...