A golden retriever needs ground-breaking cell therapy to fix its cartilage. A cat is brought in with a suspected rat bite that keeps getting bigger. And a whippet is hit by a car.

An excitable cocker spaniel needs some bionic paws. A puppy with a fractured knee must sit still if it's going to get better. And a cat dragging its legs is brought in for tests.

A Staffordshire Bull Terrier who senses its owner's nocturnal epileptic fits needs treatment for its painful legs. And an Irish Setter has a cancerous tumour.

Tina and her boisterous sons bring in a springer spaniel puppy with a badly deformed hind leg requiring complicated surgery. And a cocker spaniel has cancer.

A chinchilla requires surgery for a broken leg, but his tiny airways and bones make it a difficult procedure. And Professor Noel fights to save the limb of a puppy that's been hit by a van.

A Saint Bernard suffering with hip dysplasia and a collie that's been hit by a car are brought into the clinic for treatment. And a cat called Bradley needs a bionic paw.

A young family rush to the clinic with their Chihuahua that's been hit by a car and has a crushed pelvis. And Banjo, a much-loved spaniel is brought in with problem hips.

Noel helps Hetty the Labrador - a guide and seizure dog that's lame. There's also a Rhodesian Ridgeback with a tumour and a sickly Tibetan terrier.

When a cockapoo called Orla gets hit by a lawnmower, Professor Noel fears the worst. And Scooby the labrador has painful elbows, while a German shepherd-collie cross has a bad spine.

Ruth and Chris have spent their lives rescuing stray animals. Can Noel save their three-legged cat Jersey? There's also a dog with a dodgy elbow and a two metre tall Great Dane.