Re: Wart/grey mark?
It doesn't look normal but it could be that he's been chewing/gnawing something and rubbed away the fur in that area. Try to find out if that's the case because he might rub the skin raw if it is.
Another guess might be some kind of fungal infection or parasite infestation, which would need veterinary treatment.
Facial grooming can be a sign of pain or itching, especially if it's excessive.
|