'Everything I do revolves around the rabbits... I get up in the morning talking about rabbits and I go to bed talking about rabbits.' John Fletcher, dwarf rabbit breeder. The concluding episode of this intriguing yet depressing documentary includes a Yorkshire terrier that is officially the world's smallest canine worker, a Notting Hill dog that inspired a pet cafe, and a designer who has given a whole new meaning to the term 'rat pack' by decking out New York's rodents in tiny frocks and jewellery. Her other clients include cats. Plus, a calendar photoshoot for chicks and the micro pig that now weighs 17 stone. Jane Horrocks narrates.