Arthur's pet business

Arthur's determination to prove he is responsible enough to have a puppy brings him a menagerie of animals to care for. In order to prove to his parents that he is responsible enough to have his own dog, Arthur starts a petsitting business. Things go pretty smoothly until he thinks he has lost Perky, the spoiled dog who was his first customer. A surprise is in store for all at the end of the book--especially for Arthur!