Cheryl faces one of her trickiest operations yet - removing a grapefruit-sized lump from an elderly jack russell. Meanwhile, Rory's patient, Doris the chicken, gets herself into a bit of a flap and Cat the vet is on the hunt for some missing underpants - inside a King Charles spaniel.

James has a real emergency on his hands when a colleague's dog is badly injured. Cheryl puts her detective skills to the test on Coco the chihuahua, who is making some rather strange noises. And vet Cat gets the thrill of removing a gooey lump from the head of a much-loved moggy.

It's a first for Cheryl when she performs an extraordinary operation on a 16-year-old goldfish called Baraka. Vet Cat gets a visit from Scout, a nervous greyhound with a poorly paw. James helps Jack the cat, whose waistline is playing havoc with his aching bones.