Ten socioeconomically varied British households take on the potentially life-changing responsibility of a puppy. Over the course of six moths they must try to house-train 10 puppies of various breeds and personalities.

Every year, we welcome a quarter of a million puppies into our homes. In this series, we follow ten of them and their families through their all-important first six months together. We explore how the nation's favourite pets develop, learn and adapt to their new world, and also the profound effects they can have on the lives of their owners, capturing both the mayhem and delight a new puppy brings, from toilet training and first walks to sleepless nights and getting used to their new owners. On hand to offer our families expert advice is dog behaviourist Louise Glazebrook.—BBC's Official Plot Summary