When Boo the dog gets an energetic new dog sister named Peanut, he isn't quite sure what to do. She's loud, she drinks out of his water bowl, she eats his food, and she sleeps in his bed. Having been an only dog for his entire life, Boo would prefer that everything stay just the way it was. But Peanut loves her big brother and wants to do everything just like Boo! Will the two find a way to get along?.
