Cheryl performs surgery on Gilbert, a tiny hamster with a big problem. James throws a party for gentle giant Derek, a great dane puppy who just wants to fit in. And vet Cat needs to check over a snake that's a bit on the snappy side.

Vet James gets a visit from Winnie, an assistance dog with a very swollen paw. Rory investigates Romeo the guinea pig's mysterious eye problem. And it's party time for Cheryl and her team.