A Gecko With an Extraordinary Cancer RiskCancer appears to be uncommon in some reptiles, including turtles and tortoises. However, the leopard gecko color variety sold in the pet trade as the “lemon frost” morph presents a striking exception. Specifically, this gecko could become an incredible model in cancer research because tumors appear naturally at a relatively early age. How the Lemon Frost Gecko EmergedThe lemon frost gecko is a distinctive white and yellow variety that first appeared after a spontaneous genetic mutation occurred during selective breeding in a large leopard gecko colony. This natural tendency could make the gecko particularly useful for cancer research.