I hope it's nothing serious and that whatever is causing this can be easily treated. Good luck.

I have to trim the fur around Alani's, Blaze's, and Ziggy's furry bottoms because they tend to squat too low while pooping and then they get poopoo butt. When Ziggy gets it she'll scoot her bottom all over my carpet and leave a long poop trail. I keep telling them to watch Sky because he knows how to do it. He makes sure his bottom is up high while he goes and he's never had a problem.