A two-year old mastiff with a bone tumour in its leg undergoes pioneering surgery, only to return a few weeks later suffering pain in its foot. A tiny pug (Betty Boop) faces the prospect of euthanasia after losing control of its hind legs, but neurologist Colin Driver thinks spinal surgery could give hope, and a Rhodesian ridgeback is brought in suffering from lameness. Surgery seems like the only option, but Noel and the owners are concerned whether this is the right course of action in the long run.