Engineering students from Ohio State University are working to help a 3-legged pup named Jimmy. The Cockapoo’s owner, elementary school teacher Susan Montgomery, rescued him from a puppy mill. He had to have one of his front legs amputated, so he carries a lot of weight on his other front leg, leaving him with pain. The students created a first-of-its-kid prototype prosthesis for Jimmy that will attach at his shoulder joint. “I thought, well, this is going to be a big challenge, groundbreaking — no one’s really done it before,” said Hiromi Tsuda, one of the college students. Tsuda and her fellow engineering students shared their creation with Montgomery’s young class, in the hopes of inspiring them. “It’s incredible. It truly is a gift,” said the teacher.