In this final episode, Linus the Bedlington Terrier joins the Seymour family in Sussex. While the four children are delighted, mum Rebecca is nervous. Having given up a previous puppy because she couldn't cope with it and discovering that Bedlingtons have a reputation for not backing down in a fight, she's not sure if she's made the right decision.In North London, Cookie the French Bulldog moves in with hairdresser Louise, personal trainer Phil and their two young boys. The family have high hopes she'll fit in with their active lifestyle, but are thrown when she refuses to go out on walks. When even Phil's personalised 'puppy boot camp' fails to get results, the family call in Louise for help.And in West Yorkshire, Phoebe the cavapoo has now been with retirees Linda and Andrew for a month and shows no signs of slowing down. The couple have a short break to Harrogate planned but are concerned her unstoppable energy will make it impossible to enjoy. They're hoping her first walks will provide enough exercise and stimulation to calm the inexhaustible pup.