He's 100% indoors and this looks like it might be from him licking or biting himself.

The irritation mark is about maybe 1/4 inch long if that.

Thanks,
Melissa


Quote Originally Posted by columbine View Post
Maybe one of the others scratched or bit him? If he goes outside, he might have been bitten by a bug that he's allergic to. If it's the only place he has it, my first guess would be injury.

Love, Columbine