Kangaroos cannot walk backwards because of the shape of their legs and large feet.

The longer version

Hopping is an unusually efficient way to travel, because the long tendon in the lower leg stores energy on landing and releases it on the next push. The design works beautifully going forward and offers almost nothing in reverse.

A kangaroo's massive hind feet, heavy tail and the shape of the hip joint make backward steps nearly impossible on land. The tail acts as a third support during slow movement, forming a tripod with the forelimbs, and this gait only works in one direction. Small backward shuffles do happen in captivity, but they are awkward and rare.

Where this entry sits

This collection gathers small surprises about mammals, reptiles, amphibians, birds, fish, insects, and the pets living alongside people. Expect odd details about senses, anatomy, and everyday behaviour that many people never notice in the animals around them. The full list sits on the Animals page, where every entry is listed in order.