Hi. I did see this earlier and didn’t respond as I honestly have no idea what it is or what level of concern it is, or even if it is a concern. Usually with dark discoloration the first thing to come to mind is bruising, but that is usually much darker, like black. It could possibly be a very light bruise or injury, but I don’t know. The only other culprit that I am aware of would be a fungal infection, but again, I just don’t know. All I can say is to continue to monitor it and if it continues to grow, make a vet visit. In the meantime, if you have any other animals and especially reptiles, make sure to keep all of their equipment separate, wash your hands well before and after handling each and avoid potentially spreading anything between them. Basic precautions should always be taken though regardless of unknown skin changes or anything else. @kinyonga is the one who might have an answer.
