Woofy (2004)

In a household where no pets are allowed, a dog, in cahoots with his little boy master, passes himself off as a stuffed animal. Woofy and Anthony have forged a special bond which has led to Anthony taking the dog home and claiming to have won a stuffed animal at school. From that day on, the dog has been living a secret life. But for both, it's a dangerous game in a household where Anthony's mother, as fussy a housekeeper as there has ever been, has laid down the law: no animals allowed!