(Ceylon), Thailand, Vietnam (including Pulo Condore Island). It has been introduced to Brunei, Celebes, Oman, Seychelles, Singapore and United States. The lizards were introduced to Singapore from Malaysia and Thailand in the 1980s. In Singapore, they are a threat to the native Green-Crested Lizard. The Changeable Lizard is relatively common and found in a wide range of habitats. They appear to adapt well to humans and are thus not endangered. They are commonly found among the undergrowth in open habitats including highly urban areas. However, in China people regularly kill them due to which they are becoming rarer. Diet Changeable lizards eat mainly insects such as crickets, grasshoppers, and ants; as well as small vertebrates, including rodents and other lizards including common house geckos and day geckos. They have teeth which are designed for gripping prey and not tearing, and thus they usually shake prey to stun it then swallow it whole. Sometimes, young, inexperienced changeable lizards may choke on prey that is too large. Changeable lizards also occasionally consume vegetable matter. Reproduction Males become highly territorial during breeding season. They discourage intruding males by brightening their red heads and doing "push-ups". Each tries to attract a female by inflating his throat and drawing attention to his handsomely colored head. Oviparous; about 10—20 eggs are laid, buried in moist soil. The eggs are long, spindle-shaped and covered with a leathery skin. They hatch in about 6–7 weeks. They are able to breed at about 1 year old. References Further reading Asana, J. 1931 The natural history of Calotes versicolor, the common blood sucker. J. Bombay Nat. Hist. Soc. 34: 1041–1047. Devasahayam, S., and Anita Devasahayam. 1989. A peculiar food habit of the garden lizard Calotes versicolor(Daudin). J. Bombay Nat. Hist. Soc. 86:253. Wildlife at Sungei Buloh Wetlands Reserve, by Ria Tan Tiwari Manjula, Schiavina Aurofilio, 1990 Biology of the Indian garden lizard, Calotes versicolor (Daudin). Part I: Morphometrics Hamadryad 15: 30-33 Waltner, R.C. 1975 Geographical and altitudinal distribution of amphibians and reptiles in the Himalayas Cheetal (Dehra Dun, India) 16(1): 17-25; 16(2): 28-36; 16(3): 14-19; 16(4): 12-17. External links Reptiles of Asia Reptiles of Nepal Reptiles of Pakistan Calotes Reptiles of Mauritius Reptiles described in 1802 Taxa named by François Marie Daudin