Q. My cat has two weird open sacs on his butthole and I'm not sure if it is something that's he needs to see a vet for.
LINDSEY EDWARDS MVB, BSC, IVCA
A. These are almost certainly the openings to two glands involved in scent marking of territory and are normal. The glands can become impacted and painful and may require treatment but if he is otherwise comfortable I would not be concerned. A good quality diet with a high fiber balance can help to optimize stool quality and reduce any complications in this region