Alex just has to convince his mom to let him have an iguana. He promises that she won't have to feed it or clean its cage or even see it if she doesn't want to, but all Mom can imagine is the iguana growing larger and messier until it takes over the entire house.
Hilarious notes go back and forth as Alex negotiates with his mother, using all his powers of persuasion, while their polar-opposite dreams of life with and iguana are shown in David Catrow's hysterical illustrations.
See how clever and funny family debates can be!