Kangaroos are large marsupials that are found only in Australia.

They are identified by their muscular tails, strong back legs, large feet, short fur and long, pointed ears

The largest kangaroo, as well as the largest marsupial, is the red kangaroo, according to National Geographic.

The length from the red kangaroo's head to its rump is 3.25 to 5.25 feet (1 to 1.6 meters) long. Its tail adds another 35.5 to 43.5 inches (90 to 110 centimetres) to its length and its entire body weighs around 200 lbs. (90 kilograms).

The smallest kangaroo is the musky rat-kangaroo. It is only 6 to 8 inches (15.24 to 20.32 cm) long and weighs only 12 ounces (340 grams). Its rat like tail adds another 5 to 6 inches (12.7 to 15.24 cm) to its length.

Kangaroos are the only large animals that hop as a primary means of locomotion.

Their springy hind legs and feet are much stronger and larger than their arms (or "forelimbs"). According to the San Diego Zoo, kangaroos can cover 15 feet (7 m) in a single hop and can hop as fast as 30 mph (48 kph). Usually, 20 mph (32 kph) is considered their cruising speed.

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