Anal Sac Disease in Dogs

Overview of Canine Anal Sac Disease

The anal sacs are glands located near the anus (rectum) that produce secretions that are normally expressed during defecation in dogs. The secretions from these glands are normally pungent (in fact, very smelly) and straw-colored with brown flecks. Anal sac contents may also be expressed in times of fright (producing a terrible odor in the area).

Dogs are more commonly affected with anal sac disease than cats, and small breed dogs are more commonly affected with anal sac impaction than large breed dogs. Older female dogs are more commonly affected with anal sac tumors.

Types of Anal Sac Disease in Dogs

Types of disease include:

What to Watch For

Signs of anal gland or anal sac problems in dogs may include:

Similar signs can be seen in dogs with a different disease called perianal fistula, a severe condition that causes draining tracts around the anus. The breeds that most commonly develop perianal fistulae are German shepherd dogs and Irish setters.

Diagnosis of Anal Sac Disease in Dogs

Diagnostic tests may be required to confirm the diagnosis and exclude other diseases causing similar signs. Tests may include:

Treatment of Anal Sac Disease in Dogs

For simple impactions and cases of inflammation, expressing the anal sacs may be all that is necessary. If the anal sacs cannot be expressed while your pet is awake, then anesthesia may be necessary to express and flush the anal sacs. Other treatments may include:

In-depth Information on Anal Sac Disease in Dogs

The anal sacs are located at the 4:00 and 8:00 positions around the anus, embedded in the muscle of the anal sphincter (the muscle that closes the anus). Related glands produce a pungent yellowish secretion during defecation.

Common types of anal gland problems in dogs include:

Diagnosis In-depth of Anal Sac Disease in Dogs

Treatment In-depth of Anal Sac Disease in Dogs

Home Care of Dogs with Anal Sac Disease