Anal Sac Conditions: Anal sacs are tiny organs, on either side of the lower half of the Cavalier King Charles Spaniel's (dog's) anus, which produce a liquid thought to help Cavalier King Charles Spaniels (dogs) mark their territory. The ducts that lead from the sacs to the anus can become blocked or infected. If your Cavalier King Charles Spaniel (dog) starts scooting his bottom along the ground and licking his anus, this may be the reason. Your vet can clear the ducts or show you how to squeeze the glands yourself. If your Cavalier King Charles Spaniel (dog) is scooting its bottom on the floor most likely they are needing their anal sacs expelled. Sometimes they are able to do this themselves, but if scooting continues after a day or two you should either check the glands yourself or take your Cavalier King Charles Spaniel (dog) to a vet to be examined. If you take your Cavalier King Charles Spaniel to a groomer once a month then your groomer will take care of this for you.