Not present in humans, they are paired sacs located precisely just below the surface of the skin between the external and internal sphincter muscles, employed by nature to produce a particularly thick, foul smelling, oily liquid secreted by glandular tissue for identification and territory marking. If your dog doesn't have a problem, there is no need for you to empty his sacs. Your vet will wash out the sacs and give your dog antibiotics. In the case of a suspected tumor, the diagnosis should be confirmed by biopsy. Scar formation in the external anal sphincter may result from surgical trauma and result in tenesmus. Go Health Dog health information.
Anal Sac Disease - Digestive System - Merck Veterinary Manual
Perianal sacs, dog Perianal sacs in the dog. Adding supplemental fiber to the diet may increase fecal bulk, facilitating anal sac compression and emptying. Microscopic examination of the contents from infected sacs reveals large numbers of polymorphonuclear leukocytes and bacteria. Induration, abscesses, and fistulous tracts are common. Fistulous tracts lead from abscessed sacs and rupture through the skin; these must be differentiated from perianal fistulas.
Apocrine gland adenocarcinomas of the anal sac are typically seen in older female dogs. Adding supplemental fiber to the diet may increase fecal bulk, facilitating anal sac compression and emptying. However, fecal incontinence, a common complication of anal sac surgery, may result from damage to the caudal rectal branch of the pudendal nerve and may be complete if damage is bilateral. Anatomy of the anal sacs.
All dogs and cats have two anal glands located beside their anus. The technique involves placing a paper towel over the anal area and gently squeezing with the thumb and index finger to remove the fluid. Scar formation in the external anal sphincter may result from surgical trauma and result in tenesmus. Why are the anal sacs causing a problem in my dog? Diagnosis of impaction, infection, or abscessation is confirmed by digital rectal examination, at which time the sacs can be expressed. This fluid, used to mark territory, is normally expelled during defecation.