Hoppa with a four-wheeled deviceHoppa the dog was born four years ago without his two front two legs. He was lucky enough to be adopted by Avi Kozi, chairman of Israel's Society for the Protection of Animals. "From the moment I took him to my house, I knew I had to build something that would help him to move." Kozi said.

Though it's not uncommon for dogs to lose the use of their hind legs, problems with the front legs are much more uncommon. This presented a special challenge for Nir Shalom, the art student and animal lover who kindly offered to take on Hoppa's case.

And take it on he did. Once Hoppa gets the hang of his training wheels (shown in the video below), he will then transition into one of the most advanced dog prostheses around.