Speed - 21.5 miles/h or 34.6 km/h
Ctenosaura is a genus of lizard commonly known as spinytail iguanas within the large lizard family, Iguanidae and are native to Mexico and Central America. They range in size (total length, including the tail) from about 5 inches to well over one meter. The distinctive feature of this genus is the enlarged, spiny scales of the tail. Ctenousaurs are generally omnivorous, feeding on fruits, flowers, foliage, as well as on small animals. Some members of this genus are popular as pets. There are at least two species, Ctenosaura pectinata and Ctenosaura similis, introduced into the United States in south Texas, and Miami, Florida.
The world record sprint speed for lizards (21.5 miles/h or 34.6 km/h) was attained by the Costa Rican spiny-tailed iguana (Ctenosaura similis).