Kangaroo
There are 65 kangaroo species ranging from the small tree-kangaroo to the red giant kangaroo, which is the largest of all. When it stands upright, it is as tall as an adult human.

These marsupials have a kind of rubber band in their hind legs. It propels them upwards with each jump. The faster a kangaroo bounces, the farther the animal is catapulted forwards, and the less energy it consumes.

Fun fact:
Red giant kangaroos can grow up to three metres tall and can jump twelve metres.