It looked like some previous shed was stuck on the end of the tail. I soaked him in warm water for roughly 20 minutes and skin started to come off. The tail is still hard on the end, but the stuck shed is gone.
This is my new AFT, about a year or so old. I've had him since the fall, and he is adorable. It took him a while to get used to me, but now at night he comes up to the side of his enclosure and wants to walk up my hand and arm. However, a few sheds ago I noticed that his tail started to change...