How Dogs Behave When They Need Their Anal Glands Expressed
Dogs have anal glands, also known as anal sacs, which are two small scent glands located on either side of a dog's anus. These glands secrete a foul-smelling, oily substance that is typically released during defecation. The primary function of these glands is communication—dogs use the scent to mark territory and identify each other.
Why Dogs Need Anal Gland Expression
In healthy dogs, the process is natural and requires no intervention. However, when the glands fail to empty properly due to obstruction, infection, or inflammation, dogs may experience discomfort. This leads to unusual behavior signaling the need for human or veterinary assistance.
Common Behavioral Signs
- Scooting: Perhaps the most recognizable symptom, dogs may drag their hind end along the floor to relieve pressure or itchiness near the anus.
- Licking or Biting: Dogs may persistently lick or nibble the area around their anus or lower back.
- Foul Odor: A strong, fishy smell may emanate from the dog, especially if the glands release fluid due to internal pressure.
- Difficulty Defecating: Straining, yelping, or appearing constipated during bowel movements can indicate gland issues.
- Swelling or Redness: Physical signs around the anus, such as swelling, redness, or even visible discharge, are troubling indicators.
- Behavioral Changes: Discomfort may cause irritability, restlessness, or reluctance to sit down.
Underlying Causes of Anal Gland Issues
Several factors may contribute to a dog's inability to express their anal glands naturally:
- Obesity: Excess body fat can physically block the gland openings.
- Chronic Diarrhea or Soft Stools: These fail to apply sufficient pressure to the glands during defecation, preventing proper emptying.
- Low-Fiber Diet: Poor diet can lead to softer stools and increase gland problems.
- Food or Environmental Allergies: These can lead to skin inflammation that affects gland health.
- Skin Conditions: Infections or other skin disorders may indirectly contribute to gland issues.
- Genetics: Some breeds like Bulldogs, Beagles, and Poodles are more prone to these problems.
Possible Disorders Related to Anal Glands
- Impaction: Thickened fluid blocks the glands, causing swelling and pain.
- Infection (Sacculitis): Bacteria enter the glands, causing inflammation, pain, and sometimes pus accumulation.
- Abscesses: Severe infections may lead to pus buildup and eventual rupture, leading to open sores near the anus.
- Tumors: Malignant growths like anal sac adenocarcinoma can form, more common in older dogs.
Veterinary Diagnosis
If behavioral signs persist, veterinary care is essential. Diagnosis usually begins with a physical and rectal examination. In complex cases, further tests such as blood work, ultrasounds, or biopsies may be conducted.
Treatment Options
- Manual Expression: A veterinarian or trained professional expresses the glands manually to relieve pressure.
- Flushing: Infected glands may be flushed out under sedation.
- Medication: Antibiotics and anti-inflammatories are prescribed for infections.
- Abscess Treatment: Involves lancing and draining of abscesses.
- Surgery: Chronic or cancerous glands may need to be surgically removed, although this carries the risk of incontinence.
Prevention Strategies
- Dietary Changes: Increasing fiber helps create firm stools, aiding natural gland expression.
- Weight Management: Keeping dogs at a healthy size reduces gland-related risks.
- Managing Allergies and Skin Issues: Addressing these promptly can prevent recurrent gland problems.
- Monitoring Bowel Health: Treating diarrhea or constipation at early stages helps minimize complications.
When to Seek Help
If any of the symptoms above are present, especially if they persist, consult your veterinarian. Timely intervention can help avoid severe complications such as ruptures, abscesses, or long-term infections. Dogs diagnosed with chronic or recurring anal gland conditions may require regular monitoring, dietary management, or even surgical solutions.
Anal gland problems are both common and manageable. Understanding the signs gives dog owners the tools to respond quickly and appropriately, ensuring their pet leads a healthier, more comfortable life.





