Griff the terrier has swallowed a tennis ball - is it safe to leave it there? Wendy the wallaby is under the weather, but Peter has trouble catching the crafty critter. Lawrence the bull's fertility is in question.

Peter battles to save a young cow in labour, whose calf does not want to come out. Much-loved hamster Christopher Nibbles has an ugly skin condition. Rescue sausage dog Bella needs surgery for a fast-growing lump. Dobby the llama needs castrating. Older farmers the Greens need Peter's help with their young calves.