A mother mountain lion risks her life to feed her six kittens. This rare footage captures her incredible fight against the odds with a large elk in the snowy wilderness of Montana.

The team films something not seen before: an hours-long teaching session between adults and their young. Killer whales are one of only a handful of animals that actively teach their young, and it’s ...

Butterflies have a remarkable method for mating. See how these incredible insects reproduce. You don't have to go far to see butterflies; you just need to look . - [Narrator] If caterpillars were made ...

Mountain lions risk everything to hunt elk, prey more than twice their size. After ten years of monitoring mountain lions in Montana, this crew has captured this behavior on camera only four times.

Follow a paleontologist on an Arctic adventure to uncover the hidden lives of walrus and the threats they face as climate change shrinks the sea ice. The walrus is one of the Arctic’s most enigmatic ...

Researchers from the University of Washington conduct a long-term experiment to see if crows can pass down information from one generation to the next.

See the wolverine at play, sprinting across snow-covered terrain, and uncovering animals buried in the ...

Male pigeons pull out all the stops to win love — shimmering feathers, amplified coos, and even a “pigeon kiss.” Discover how these city birds find a mate for life! - [Narrator] It's time for pigeons ...

When the gray wolf was eradicated from Yellowstone National Park in the 1920s, more was lost than just the noble and fascinating predator. The park’s entire ecosystem changed. Now, nearly a dozen ...

This orphaned baby walrus, dubbed Little Miss Walrus, was found alone on a remote Alaskan beach, just one week old and covered in scratches. She’s now safe at the Alaska SeaLife Center, the only place ...

NATURE presents the compelling story of a remarkable denizen of the West in Cloud: Wild Stallion of the Rockies. America’s wild horses lead an exhilarating but perilous existence. The climate can be ...

Reindeer and caribou are the same species (Rangifer tarandus). In North America, they are called caribou if they are wild and reindeer if they are domesticated. In Europe, they are called reindeer.