A pleasant early chapter book with a realistic variation on a tried-and-tree plot: boy wants dog, boy finally acts responsible, boy gets dog. Billy doesn't pick up his room and fails to protest when his best friend gives his little brother a ride on an automatic garage door (nobody hurt; door ""breaks""). However, when his parents learn that Billy has been a real help lo the local vet, they acquire from the vet the stray that is already Billy's favorite. There's good interaction among the characters here, including grandparents and Billy's baby sister. One small reservation: lots of kids, like Billy, nibble dog biscuits; but why quote his doctor as saying it's all right? Laws intended to insure the purity of human food do not extend to dog food.