Episode 2

Following six British households taking on the potentially life-changing responsibility of a puppy, tracing their stories over the course of the first year of their puppy's life.

In this second episode, the owners have made it through the first trying months, but now adolescence hits. For many puppy owners this is the most trying time of all. Common problems include aggression, humping and roaming. Half of dogs are abandoned at this stage due to owners refusing to work through their dog's problems.

Stewie, the tiny Yorkiepoo, makes a bid for stardom, becoming the cover star of a leading puppy fashion catalogue. Lola is being trained by Colette to be her assistance dog, but only if Colette can stop her jumping up and biting. 15-year-old Jack France decides to follow in his dad's footsteps and train his border collie Jess to be a sheepdog-trialling champion.