Rango

A theatrically-minded pet chameleon is left to fend for himself in the Mojave Desert after his vivarium accidentally falls out of his owners' car. The chameleon sets out to find a nearby American frontier-like town called Dirt, where he meets desert iguana rancher Beans and presents himself as a tough drifter named "Rango". Rango is appointed sheriff by the town's elderly tortoise mayor after accidentally killing an outlaw and becomes embroiled in a mystery surrounding a severe water shortage.