A kangaroo can’t jump unless its tail is touching the ground.
Amazingly Kangaroos are the only large animals that move by hopping. The amazing fact is that a kangaroo can’t jump unless its tail is touching the ground for balancing, so if you lift a kangaroo’s tail off the ground, it can’t hop. A fully grown kangaroo can jump amazingly up to 25 feet (8 Mtrs) and bounce along at speeds up to 40 mph.