My female tremper has a very small kink at the end of her tail. It is not genetic, she seems to have formed it recently as she did not have it when I got her(She has been given proper supplements). The only thing I can think of is the fact that she had trouble with her tail on her last shed, I got it off, but it took a lot of effort, which makes me think she had a lot of trouble with it. Could she have caused it trying to get her shed off? Maybe biting it?