An energetic one-year-old bull terrier puppy called Apple comes into the surgery with an ankle problem, and Noel hopes a custom-made, 3D-printed implant may give this beloved pet a new lease of life. He also treats a two-year-old Siamese cat with a broken leg, shattered pelvis and suspected spinal injury after being hit by a van, while four-year-old collie cross Rosco is tested for hip dysplasia.