The Spiny turtle (Heosemys spinosa) is native to Myanmar, Thailand, Malaysia, and Singapore and can also be found on the islands of Sumatra and Borneo. They are listed in Appendix II of CITES and are considered Endangered by the IUCN. They are commonly called ‘Spiny turtles’ because of the shape of their marginal scutes, which are quite sharp when the turtles are young. In fact, these spines are an excellent example of an evolutionary trait developed to discourage predators from eating the turtle during the first few years of their life. As the turtles grow up, the spines disappear. The juveniles also have a very striking radiated pattern on their plastron that fades with age.