Virginia’s ‘Dr. Doolittle’ gives amputated animals new lease on life. From a miniature pony to goats, dogs and other animals, Derrick Campana fashions prosthetics that use non-invasive techniques that can help them walk again. Angel Marie the pony was stepped on by her mother shortly after she was born. Her front legs were so severely damaged, she was too crippled to walk. It was a challenge Derrick Campana, the so-called “Dr. Doolittle” of Animal prosthetics, was ready to tackle. He says watching Angel Marie take her first steps was emotional.