Hetty the Labrador is unique as she is thought to be the first dog to have been trained both as a guide for the blind and a seizure alert dog. Hetty has become lame on both her front legs and has been referred to Noel. Ella and Rob bring their Rhodesian Ridgeback to see Noel to see if surgery can save his leg from a cancerous tumour.
After a young cockapoo called Orla gets hit by a lawn mower, Professor Noel fears the worst. His challenge is to save as much of the leg as possible. Samantha, who suffers from a rare brain condition, has a special bond with seven-year-old Labrador, Scooby. He has been suffering with pain in his elbows, and Noel needs to find out the full extent of the problem.