A brave dog has learned to walk on just TWO LEGS after having to have the other two amputated following a fall.Pit bull puppy London shattered his front legs when he fell three floors from a window and crashed onto hard tarmac below.He also suffered burns to his paws and stomach on the hot surface.But the cute pooch didn't have his wounds tended to for a month - meaning his front legs had to be removed.Vets decided to fit London with a specially made wheelchair, but before it was needed the incredible pup taught himself to walk with just two limbs.Amanda Giese of animal rescue home Panda Paws, said: "When he fell he was pretty much stuck where he was until he eventually learned how to navigate around.