The blue whale is the largest animal on Earth, growing up to 100 feet long and weighing as much as 200 tons.

Sloths only defecate once a week and they climb down from their trees to do so.

Kangaroos can jump up to three times their own height in one bound.

Female ferrets can die if they don't mate when they come into heat because their bodies produce high levels of estrogen.

The bat is the only mammal that is capable of sustained flight.

Polar bears have black skin and transparent fur, which reflects the light and makes them appear white.

A group of flamingos is called a "flamboyance".

Octopuses have three hearts.

Elephants are the only animals that can't jump.

Camels can go without water for up to two weeks, thanks to their ability to store water in their humps.

Penguins have a gland above their eyes that filters out saltwater, which helps them survive in the ocean.

The cheetah is the fastest land animal, capable of reaching speeds of up to 70 miles per hour.

Pigs are more intelligent than dogs and can learn tricks just like them.