General Information

The anal sacs are located on each side of the anus, just under the skin. They open to the outside by tiny passageways or ducts. Glands within the anal sacs produce a dark, foul- smelling substance. The sacs normally empty as the animal has a bowel movement. Their purpose is unknown and your pet can do well without them. 

Diseases of the anal sacs fall into 3 categories:

  1. Impaction: The anal sac fluid is abnormally thick and cannot escape.
  2. Infection: Bacteria produce a yellow or bloody pus. Infection may also exist in other areas, such as the eyes, ears, tonsils and/or skin.
  3. Abscessation: As a result of infection, a hot, tender swelling near the anus may rupture and discharge pus and blood

Signs of anal sac disease include "scooting" (dragging the anus on the floor), excessive licking under the tail, tenderness near the tail or anus, and/or bloody or sticky drainage from the anal area.

Important Points in Treatment 

 Treatment for anal sac disease may include the following:

  • Manual expression (squeezing) of the sac contents.Flushing the sacs and instilling antibiotics into them. Surgical drainage or removal of the sacs.
  • Feeding a diet higher in fiber.

 Notify your Veterinarian if Any of the Following Occur:

 * Your pet is reluctant to eat.

 * Your pet is depressed or listless.?

 * There is a sudden swelling or drainage near the anus. 

 * Your pet constantly licks its anus.?

 * Your pet vomits.?


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