Animals

Fossilized bird tracks discovered in Australia show these ancient creatures lived in the southern polar regions on the supercontinent of Gondwana.

Obesity is wreaking havoc on cats' digestive systems, causing "significant changes" in their gut microbial compositions and giving them highly acidic poop.

MBARI researchers came across a rarely seen dreamer anglerfish off California's coast. Video footage of the alien-looking fish only shows its silhouette because its skin is so dark it absorbs almost all of the light that hits it.

True crabs evolved to migrate between marine and land environments multiple times throughout their 250 million-year-old history, new study finds.

In this interview, elephant expert Ross MacPhee explains how the giant animals' tusks record every week of their lives and why their noses are so remarkable.

A new show on "The Secret World of Elephants" at the American Museum of Natural History in New York City dishes on the evolution and remarkable lives of these huge (and sometimes dwarf) pachyderms.

Elephants in Kenya's Amboseli National Park appear to call to each other with individual names using low, complex "rumbles," a study has found.

Spallanzani has been described as having a "lust for knowledge": a passion that sometimes seemed to exceed propriety, as when he was said to have begun expounding enthusiastically to a group of dignitaries about the mating of frogs.

Rather than throw its old head cases away, the gum leaf skeletonizer wears them like a hat to protect itself from predators.

A huge Burmese python caught in Florida is the second-heaviest ever caught in the state, weighing in at 198 pounds.