Mammals are not especially diverse. Roughly 6,800 mammal species are known to exist, compared with about 8,800 species of amphibian, 11,000 species of bird and 12,500 of reptile. Yet when most people ...

That visibility comes with scrutiny. Mammals are among the best-studied organisms on Earth - and among the most threatened.

Take a mama salmon, for example. It lays thousands of eggs at a time which the males fertilize thoroughly. The salmon packs each egg with more yolk compared to an urchin, that means more proteins, ...

DNA is revealing that many animals once thought to be a single species may actually be several hidden ones. But research on ...

Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with backbones.

Every state has regulations, but few of these strange animal laws feel essential.Some exist to protect animal welfare, others to shield people, and some are so oddly specific you can’t help but wonder ...

Scientists found a jaw so bizarre they assumed it was broken - they were very wrong.

Dramatic landscapes and rich biodiversity characterize Alaska’s unique environment. Alaska is the only US state with ...

Scientists may have been dramatically undercounting the number of vertebrate species on Earth. A large analysis of more than 300 studies suggests that for every recognized species of fish, bird, ...

Most mammals wear coats of brown, black, and gray, while parrots flash brilliant reds, reef fish shimmer in electric blue, and chameleons shift between greens and golds. This disparity is not random.