Iguana

Iguana is a species of lizard, one of the creatures fortunate enough to survive the Great War. Unfortunately for them, they are commonly hunted and eaten by people, most often as the Iguana-on-a-stick meal, very much popularized by a man known as Iguana Bob (even if his meals are not always made of iguanas).

Appearances in games
Iguanas appear in Fallout, Fallout 2 and Fallout Tactics, but they're always on a stick. A living iguana is yet to appear.