Trim up his back end or take him to a groomer for a sanitary trim. You might have to cut the floof off his pants a bit if it's a real problem.Furry one with long hair so it is often seen that his feces got caught in his backside when he does his business in the litter box. How can I clean it and how can I avoid it in the near future?
Interesting call there. I never would have thought of that.Unless some pigment from a cloth or a piece or furiniture, or floor has stuck to his coat, the first thing that comes to my mind is if your cat has a likely liver issue.
When my cat had such an issue, her colored saliva would tinge her white coat.