By contracting your facial muscles in different ways you can produce countless different expressions, from frowning to smiling and winking to raising an eyebrow. Your frontalis muscle runs ...

A new study published Wednesday in Royal Society Open Science suggests the facial muscles needed for the “puppy dog eyes” expression might not be exclusive to domestic dogs. Coyotes have the ...

A scientist who examined the facial muscles in cadavers has found that the muscles which control our facial expressions are not common to everyone. Share: Facebook Twitter Pinterest LinkedIN Email.

In 1862, French neurologist Guillaume-Benjamin-Amand Duchenne de Boulogne published The Mechanism of Human Facial Expression, a scientific and aesthetic text on the ways in which the muscles of ...

What a gorilla named Lia taught scientists about human facial expressions It’s very rare to get the opportunity to dissect a gorilla. The delicate questions it raises about us are bananas ...

You've probably heard the claim that it takes more muscles to frown than to smile. It's usually framed as a feel-good reason to turn your frown upside down—less effort, more joy. But ...

Dogs possess facial muscles that wolves do not, according to the study. Dog owners convinced that their pup could convey a range of expressions through their eyes now have scientific evidence to ...

By having more fast-twitch fibres in their muscles, dogs can speedily form a range of facial expressions, including their signature “puppy-dog eyes”, and make short, sharp barks.

African wild dogs might use facial expressions to communicate with each other as they hunt in packs on the savanna. Arno Meintjes via Flickr under CC BY-NC-SA 2.0 DEED Puppy-dog eyes are irresistible.

In a study published in the journal Behavioural Processes last month, two US scientists counted 276 different facial expressions when domesticated cats interacted with one another.

A diagram shows the LAOM muscle that pulls the inner eyebrow, along with a muscle called RAOL, which pulls the side corner of the eyelid toward the ears. Tim D. Smith via Wikimedia Commons under ...