Nature can be brutal, especially predator-prey interactions. Watch orcas hunt smaller dolphins by head-butting them mid-air here.

A sweet moment caught on video is making lots of people smile. Watch a baby Matschie’s tree kangaroo explore the world.

Whale watchers spotted a rare white southern right whale off the coast of Argentina. See Agustín Baraschi’s beautiful footage.

Have you ever seen a coyote carrying a severed deer head? Get the story from wildlife photographer Vishal Subramanyan here.

A young black bear cub mercilessly ambushes its sibling at a watering hole in this funny trail-camera footage.

Research confirms a mountain lion that struggled to stand and walk had the fatal staggering disease. It’s the first case in North America.

A bear tried to steal a man’s backyard bird feeder in Maine this week. The resulting video footage is quite funny.

A river guide came across something she didn’t expect to see in the Yellowstone River earlier this week—a headless, pawless grizzly bear.

Kansas biologists were searching for a rare, tiny snake called the New Mexico threadsnake when they found one in a surprising place.

Cross river gorillas are extremely rare, with only about 300 of them left in the wild. Check out this exciting new trail-cam footage.