When you think of Florida Keys wildlife, you probably think of sea turtles, dolphins, manatees, or colorful coral fish. Maybe ...

DNA analysis reveals a fanged frog scientists thought was one species for nearly 200 years is actually several hidden species ...

On a bad day for the planet, the first signs would look ordinary at first. A bright streak in the sky, a strange pulse on space-weather monitors, or a distant star suddenly flaring where none had ...

For nearly two centuries, a small brown frog living in Southeast Asian rainforests was considered a single, well-understood ...

The Earth brims with extraordinary creatures, but none captivate the imagination quite like its largest animals. Dominating the oceans, the blue whale reigns supreme as the biggest creature ever to ...

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, ...

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 ...

Joro spiders, an invasive orb-weaving species native to East Asia, have invaded the U.S. and most of the Southeastern states.

A potted scarlet monkeyflower would die within a few days without water. But multiple natural populations of the species ...

Many people deem scorpions as one of the most interesting members of the class Arachnida owing to their formidable looks, ...

A plantation worker photographed this new genus of mammal in New Guinea, thought to have been dead for 6,000 years.

How scientists (and the rest of us) are finding 16,000 new species a month.