A species of butterfly uses its decorative flair for protection and also varies its color and intensity by season as predator types change.
Hummingbird beaks aren't just for nectar sipping. They can double as weapons in the mating game.
Green anole handles arrival of an invasive competitor by making better toes in a mere 20 generations.
Once thought to be pointless and on the evolutionary fast track to disappearance, new research has given the whale pelvis bone a new lease on life.
The specimen, approximately 560 million years old, contains fibrous bundles that appear to be muscle tissue, an important evolutionary adaptation.
Study reveals the key factor behind the transformation of theropods into high fliers.
Birds' eggs show pigment and structural adaptations that let just the right amount of sun reach the embryos.
Hamsters, squirrels, platypuses, chipmunks, and some primates can store food in their cheeks! The storage facility's undeniably cute, but, beyond cuteness, why the heck do these critters have cheek pouches?
+ Load More