Dogs have stronger facial muscles compared to wolves, giving them the sad or “puppy dog eyes” look.

The skull bones of a catfish move in coordination when capturing prey.

The fabella disappeared from our lineage millions of years ago, but over the last century, its presence in people’s knees has become more common.

Belly fat helps fight infection, but is also a common site of metastasis.

Hanging in front of the abdomen like an apron, the depot of visceral fat known as the omentum helps regulate immune responses.

Juan Valverde de Amusco’s anatomical drawings corrected some earlier errors while making anatomy more accessible.

People have a unique anatomy that supports our ability to produce complex language.

Evolutionary changes in both the vocal tract and the brain were necessary for humans’ remarkable gift of gab.

The chelicerates’ unique anatomical features make them useful analogs to extinct arthropods.