could be temp and dehydration but could also be something more sinister. def give it a mist a few times a day as it will help bring temp down and rehydrate. For all those who say just kill it. go outside and find your dog or cat and shoot it. if you look on the exotic list dogs and cats are there. I'd say that they do more damage to the native fauna than a crested gecko would do too. Not saying i agree with him keeping it but thats not the question asked.