we've kept our U. henkeli 65-85, with a more constant temperature around 75 degrees F. We've had them reach 85-90 degrees F for several hours with no ill effects. Please note however, that these are well fed, well hydrated animals, in great health. Rapid decline in otherwise unhealthy, or poorly cared for Uroplatus will wither away quite quickly in the higher temperatures. U. lineatus, U. fimbriatus, and U. henkeli are ones that I personally have kept at these temperature ranges....