Chuckwalla, a stout lizard native to the southwestern United States. It grows to a length of about 18 inches (45 cm). The tail is thick and short. Young chuckwallas are brown with dark bands or other markings; older animals are a solid reddish brown. Chuckwallas feed on buds, flowers, and young leaves.

The chuckwalla is Sauromalus obesus of the family Iguanidae.