I've noticed my beardie's tail is dark towards the end and I always thought that was just how he looked, but now I'm worried it might be tail rot. He went to the vet around a week ago, and she didn't say anything, but I'm not sure if it is just because I didn't ask her about it. It doesn't seem to be in pain and feels just like the rest of the body. In the picture it's a little darker than it actually looks.