Episode 4 - S15.E4

The pioneering vet treats a 10-year-old beagle unable to stand on its back legs, and when a scan reveals the canine has two diseased discs between three of its neck vertebrae, he operates to fuse the bones. He also fits a bionic knee in an 11-year-old labrador with bone cancer in its leg, and treats a bulldog puppy that has been run over by a car.