The Gila monster is one of only a few poisonous lizards in the world. The Gila (pronounced HEE-luh) is the largest lizard ...

When you see a snowy owl, it's clear how the bird probably got its name: they're snow-white. Males are generally whiter than females. As males grow older, they get whiter. The females never become ...

These frogs are considered one of Earth's most toxic, or poisonous, species. With a range of bright colors—yellows, oranges, reds, greens, blues—poison dart frogs aren't just big show-offs either.

Canada geese usually graze together in fields, eating grasses, sedges, grains, and berries. Their bills have serrated edges, which helps them cut tough grass stems. In addition to grasses, sedges, ...

Bison are the iconic image of the Great Plains and the Old West. They are massive, shaggy beasts and the heaviest land animals in North America. Despite their hefty size, bison are quick on their feet ...

These insects get their name because they have very long front legs that they hold in a position that reminds people of ...

While much of the world sleeps, vampire bats emerge from dark caves, mines, tree hollows, and abandoned buildings in Mexico ...

Balanced on a rock in the middle of a river, a black bear lowers her head to the water and … chomp! A wriggling salmon is no match for her strong jaws. She’s spent the summer eating berries and ...

The sun sets over a quiet backyard garden. A red fox sneaks into the yard, its nose in the air, sniffing loudly—it smells ...

Black rhinoceroses have a sort of attack-first-and-ask-questions-later attitude. When a rhino catches the scent of a human or anything else unfamiliar, it is likely to charge. Rhinos can't see well, ...