Birds, unlike their dinosaur ancestors, lack teeth, relying on beaks and gizzards for eating. Some birds have evolved tooth-like adaptations for gripp ...

Four wild cat species in Central America’s rainforests coexist by dividing the forest vertically and targeting different prey.

If you’ve seen any of the “Ice Age” animated Disney movies, we have some bad news: You don’t know the real ice age. It was an incredible time when the Earth was going through immense systemic changes ...

From sturdy shells to mobile shelters, these 10 remarkable creatures depend on their natural homes to stay safe.