How can cats jump so well? Cats have a unique skeletal structure that allows them to move in ways humans and dogs can’t – the average cat can jump six times its own height. It is because of their skeletal structure cats are able to balance on the top of fences, absorb the shock of jumping down from heights many times their own size, and land on their feet. The secret to a cat’s ability to jump is hidden in their back legs. The strong legs work almost like springs, propelling the cat up and forward. Since the cat pushes off whatever surface they’re on with a lot of force, they tend to first test its stability. Then they crouch, tighten their body, and uncoil like a spring.