Ctenosaura is a genus of lizard commonly known as spiny-tailed iguanas. They are 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 is at least one species, Ctenosaura pectinata, introduced into the United States in south Texas, and Miami, Florida.