Derrick Campana is an engineer that makes animal prosthetics.  He became a animal prosthetics engineer by going to a human prosthetic class, but decided to combine his love for animals with his main focus.   Campana has helped about 10,000 animals in his career, 90 percent of which are dogs.  Campana’s largest patients were 2 Thai elephants that had damaged their limbs in a minefield.