My first thought was "What the hell are they feeding the cat that would cause it to have shitballs hanging from its butt fur?"
My second thought was "Why don't they shave the cat's ass to get rid of the shitballs?"
My third thought was "It's a DUmmie's cat, it's 10x smarter than its owner, it gets shitballs on its ass so the DUmmie has to run after it all day because the DUmmie is too stupid to change the cat's diet or shave the cat's ass, and cats are devious. The cat is no doubt laughing its balls off at the DUmmie, because the cat doesn't have to clean the shitballs off its own ass."