Hi, so I have a little problem. This is my first post so I don't know how well I can explain things. In the midst of going to brush my teeth I noticed one of my boys, Duke was in his usual sleeping spot but what was so off was that the underside of his head was silver/white. It wasn't patchy and it wasn't in random spots so this worried me to the point where I sat with him, I noticed that his colour slowly began to come back. Do they have nightmares? He acted completely normal when I was with him.