Max really wants a pet. His parents aren't so sure. Puppies chew, parrots screech and sharks have too many teeth. How about a dragon? Max's parents say that dragons don't exist, so Max settles for a pet worm instead. Except this particular worm turns out to be very unusual when its back begins to turn spiky and it starts to breathe smoke . Dragons don't exist. Do they?A funny and light-hearted story from much-loved children's author Debi Gliori, perfect for any child who has ever wanted a pet. With an added cautionary tale about being careful what you wish for.