Watch this unsettling video of an aggressive hippo with incredible speed chasing after a boat full of nervous tourists!

Turns out, there's more to the shark than sharp teeth and gills. Read on to learn about these misread sea dwellers.

UK law both requires and regulates experiments on animals. Any new drug must be tested on at least two different species of live mammal, one of which must be a large non-rodent. The way scientists ...

Tyrannosaurus rex was one of the most ferocious predators to ever walk the Earth. With a massive body, sharp teeth, and jaws so powerful they could crush a car, this famous carnivore dominated the ...

Sloths are so slow that moss and fungi can grow on their fur! They move at an average speed of 0.17 miles per hour. This leisurely pace conserves energy as their diet is low in calories. Sloths have ...