Penguins across Antarctica are breeding weeks earlier as temperatures rise, signaling rapid climate change and growing risks for survival.

Midwinter marks the annual return of humpback whales to Hawaiʻi, swimming down from Alaska to breed in the warmer waters. Tiger sharks start showing up in greater numbers soon thereafter from across ...

Take a peek into the always entertaining lives of birds, from intimate moments with mates to fierce fights for territory.

Learn how a decade of monitoring reveals why Antarctic penguins are breeding earlier than ever, and what those shifts may signal about life in one of the world’s fastest-warming regions. Gentoo ...

DNA testing will confirm which of two male bears is the cubs' father Smithsonian's National Zoo and Conservation Biology Institute The Smithsonian's National Zoo welcomed two sloth bear cubs on Dec. 7 ...

Two sloth bear cubs were born at the National Zoo, which appears to be good news for this vulnerable species and perhaps bad news for the termites on which they dine. The births, which occurred Dec. 7 ...

On a cold late winter night, a sudden chorus of high-pitched howls can haunt a quiet neighborhood. Those sounds often mean local coyotes are in the middle of mating season, a short period when they ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Among marine mammals, beluga whales (Delphinapterus leucas) are ...

Whether you're looking for a beloved Berner or mighty mastiff, these mountain dog breeds come in all shapes and sizes With their majestic manes, rugged good looks and rich histories, it’s hard not to ...

A covey of gambel’s quail scurrying through the desert with their topknots bobbing is a common sight in parts of the southwest. Adapted to live in arid climates, the gambel’s is especially associated ...