Five-legged kangaroo? Telling the tale of a kangaroo's tail

Kangaroos may be nature's best hoppers. But when they are grazing on all fours, which is most of the time, their tail becomes a powerful fifth leg, says a new study. It turns out that kangaroo tails provide as much propulsive force as their front and hind legs combined as they eat their way across the landscape.

by via Latest Science News -- ScienceDaily