The Armadillo Lizard (Cordylus cataphractus) is a spiny-tailed lizard endemic to desert areas of southern Africa. It is also known as the “Typical Gridled Lizard”, Armadillo Girdled Lizard or the Armadillo Spiny-tailed Lizard. They can be a light brown to dark brown in coloration depending on the subspecies, and are sometimes referred to with the common name of golden armadillo lizard. The underbelly is yellow with a blackish pattern, especially under the chin.This lizard has a distinctive defensive posture, in which it grabs its tail and curls into a ring. Its size ranges from 16 to 21 cm (61/2 to 81/2 in) in length. In South Africa, trade in Armadillo Lizards is illegal. This lizard is very difficult to find for sale in the pet trade for this reason. However, due to breeding, they are becoming more and more available in the pet trades of North America and Europe.
http://en.wikipedia.org/wiki/Armadillo_Lizard