How Finn the yellow lab helped save an island of penguins

Bonobos like to share with strangers — even when it comes to food

Watch a caterpillar hatch from an egg the size of a pinhead

Squirrel injured by trap is fitted for wheels

7 haunting songs sung by whales

From fuzzy fluffball to stately bird: The life cycle of an eagle

U.K. to impose world's 'toughest' ivory ban

12 apps that will turn you into a nature expert

Why can't you just flick away a tick?

Frogs in Panama are resisting a deadly fungus

'Migrating with the Sandhill Cranes': Follow the journey

Meet Spongebob Satanpants, a fish with a past