At a glance, alligators and crocodiles look nearly identical. Both are massive reptiles with armored skin, powerful jaws and ...

Filming "Parenthood" meant working with local trackers, scientists, and communities across the globe — from the Babongo people in Central Africa to conservationists in Patagonia.

After weeks of protecting her brood, a spider mother makes the ultimate sacrifice, offering her own body as food.

Watch the drama unfold as Cloud struggles to keep his family intact in the face of challenges both natural and man made. In 1995, while filming wild horses in the mountains of Montana, Ginger Kathrens ...

Marine ecologist Alannah Vellacott grew up in a Bahamian subsistence fishing community, where wrestling sharks before sunrise was part of daily life. Now she’s dedicated to conserving these majestic ...

A sloth scientist, her tree-climbing BFF, and their dog work to save Costa Rica’s sloth populations in groundbreaking ways, all while capturing rarely seen wild sloth behaviors and reimagining what it ...

In 1893, a bounty hunter named Ernest Thompson Seton journeyed to the untamed canyons of New Mexico on a mission to kill a dangerous outlaw. Feared by ranchers throughout the region, the outlaw wasn’t ...

The axolotl is a type of salamander. It has a long tail, flat head, and four lizard-like limbs, which it uses to move around the lake floor. But unlike other salamanders, axolotls are neotenic, ...

The fennec fox is the smallest of the foxes. Their head and body are 9.5 to 16 inches long and their tail is 7 to 12 inches long. They stand at 8 inches in height at the shoulders. Their weight ranges ...

Ocelots are similar in size to bobcats. Female ocelots weigh 14.5 to 25 pounds, while male ocelots are heavier, weighing 15 to 34 pounds. Ocelots are typically 29 to 39 inches in length, with males ...

Humpback whales weigh up to about 40 tons and can reach up to 60 feet in length. Their flukes can be up to 18 feet in width. The humpback whale is named for the distinctive hump on its back. They have ...

The body of an echidna ranges from 14 to 30 inches in length with a tail of 4 inches. They weigh 5.5 to 22 pounds. An echidna has a tiny face with small eyes and a long nose, which is sometimes called ...