These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

You probably don’t think much about teeth until a dentist brings them up. But across the animal kingdom, tooth counts can get wild fast.

A study finds an early mammaliaform displaying tooth anatomy that gives insight into the development of structures such as complex molars and multiple roots. One evolutionary milestone in the ...

Llamas are cute, but what makes them even better human companions is their gentleness and empathy. People from their native habitat, the Andes Mountains in South America, dub them “silent brothers”.