What are they?
Anal sacs are two small glands that are found just inside of your pets anus that contain a foul-smelling material. Prior to domestication, these glands served the purpose of marking an animals territory, and could be readily emptied voluntarily. Pets nowadays have largely lost their ability to empty their sacs on demand, and the process occurs naturally during normal defecation when firm feces are passed, lubricating the anal opening in the process. Glands can also “spontaneously empty” during times of stress or excitement; you can recognize this has happened if your dog or cat suddenly develops a very unpleasant odor. Read more