Komodo dragon collision between Australia and Southeast Asia allowed these larger varanids to move back into what is now the Indonesian archipelago, extending their range as far east as the island of Timor. The Komodo dragon was believed to have differentiated from its Australian ancestors 4 million years ago. However, recent fossil evidence from Queensland suggests the Komodo dragon actually evolved in Australia before spreading to Indonesia. Dramatic lowering of sea level during the last glacial period uncovered extensive stretches of continental shelf that the Komodo dragon colonised, becoming isolated in their present island range as sea levels rose afterwards. Extinct Pliocene
Abbott's crested lizard handle them sparingly and for short amounts of time. Over handling can stress the dragon and can cause sickness. It is also important to be aware of lizard parasites. Every time a dragon is handled parasites are transferred from human to lizard and vice versa (Langerwerf, 2006, pp. 51–57). The angle-head is a shy and an excitable dragon; therefore, a spacious pen is recommended to reduce stress and make them feel more at home (Langerwerf, 2006, p. 107). In fact, the environmental set up for the dragon is imperative to maintain a healthy dragon such as "G. abbotti". The dragon