My kitty tiger has this bump on his head. I noticed it a few weeks ago and since then it hasn't changed in shape or size. The bump doesn't seem to be bothering him, it's not hot to the touch or itchy. I'd like to avoid going to the vet and running endless tests, but I will if I can't find any answers here. I think It is a just a fatty deposit. Anyone have something like this happen to your fur ball?? He is indoor/outdoor.