So he is currently sleeping because I get off work at 2:30am, and I just turned on the light in my room. I look at him to see him in his usual sleeping spot, when I noticed his mouth was cut!! I know it's just the tip part, but I'm worried! I think he did it to himself somehow. Does that heal up? Or not?? Is it something to be concerned about? I'm just upset because I make sure I take good care of him, but this comes out of nowhere!