How To Express Dog's Rectal Glands
Anal gland expression is one of the most misunderstood procedures in routine pet care. While some dogs naturally empty their anal sacs during bowel movements, others require manual assistance when the glands become impacted, infected, or overly full. This guide explains the clinical method for expressing your dog’s rectal glands, when it is appropriate to do so at home, and when you must seek veterinary help.
Quick Q&A: Common Questions
Question: Why is my dog shaking or scooting on the floor?
Answer: Scooting, trembling, or excessive licking of the rear often indicates full or impacted anal glands. The pressure from built-up fluid inside the sacs causes discomfort, and your dog may be trying to self-relieve by dragging or biting at the area. These signs warrant a check of the glands, either at home or by a professional.
Understanding the Rectal Glands
Your dog has two small scent glands located just inside the rectum, positioned at approximately 4 o’clock and 8 o’clock relative to the anus. These sacs normally secrete a thin, fishy-smelling fluid during defecation. When the glands fail to empty naturally, the fluid thickens, and the sacs become distended. Over time, this can lead to impaction, infection, or even abscess formation.
Clinical Signs of Full or Impacted Glands
- Scooting: Dragging the rear along the ground.
- Licking or biting: Focusing on the tail base or perineal area.
- Foul odor: A sudden, strong fishy smell from the rear.
- Swelling: Visible or palpable lumps near the anal opening.
- Pain: Yelping or flinching when the tail is lifted or the area is touched.
Home Expression: The External Method
Veterinarians generally recommend external expression only for maintenance in dogs with chronic fullness, and only under specific conditions. The internal method (performed rectally) should be reserved for professionals due to the risk of gland rupture, infection, and severe pain.
Step-by-Step External Technique
- Prepare supplies: Wear gloves, have paper towels or a damp cloth ready, and work in a well-lit, easy-to-clean area such as a tiled floor or bathtub.
- Position your dog: Stand behind your dog with its tail lifted gently. For small dogs, you may place them on a table or counter. For larger dogs, work from the side.
- Locate the glands: Place your thumb and index finger on either side of the anus, at the 4 and 8 o’clock positions. You should feel two small, pea-sized or marble-sized lumps just beneath the skin.
- Apply gentle pressure: Squeeze inward and upward toward the anus, using a steady but firm motion. Do not press directly on the anus itself. Aim to express the fluid outward through the duct opening.
- Observe the fluid: Normal secretion is thin and brownish. If it is thick, pasty, or contains blood or pus, stop immediately and consult your veterinarian.
- Clean and monitor: Wipe the area with a damp cloth. Offer a treat or distraction to reduce stress.
What to Avoid
- Do not force expression: If the glands do not release with moderate pressure, stop. Forcing can rupture the sac wall, leading to abscess and severe infection.
- Do not use tools: No tweezers, clamps, or blunt objects should be inserted into the rectum.
- Do not express inflamed or infected glands: If you see redness, swelling, or discharge, or if your dog shows intense pain, seek professional care immediately.
What to Expect at the Vet
For dogs with chronic issues, impacted glands, or infections, a veterinary visit is standard. The professional method involves:
- Internal digital expression: The veterinarian inserts a gloved, lubricated finger into the rectum to palpate and empty the gland from the inside. This is more effective and less painful than external methods.
- Flushing: If the gland is impacted with thick material, the vet may flush the sac with sterile saline to clear the duct.
- Antibiotics or anti-inflammatories: For infected glands, a course of oral or topical medication may be prescribed.
- Abscess drainage: In severe cases, the gland may need to be lanced and drained under sedation.
Prevention and Long-Term Care
Not every dog needs routine manual expression. Breeds with naturally efficient gland emptying (such as larger, active dogs) rarely require intervention. However, certain groups are prone to issues:
- Small and toy breeds (e.g., Chihuahuas, Poodles, Shih Tzus)
- Overweight or obese dogs
- Dogs with chronic soft stool or diarrhea (which fails to compress the glands during passage)
- Dogs with allergies or skin infections that cause anal area inflammation
Dietary and Lifestyle Support
- Fiber supplementation: Adding canned pumpkin (plain, not pie filling), psyllium husk, or a veterinary fiber product to meals helps create bulkier stools that naturally compress the glands during defecation.
- Regular exercise: Movement and muscle tone support healthy bowel function and gland emptying.
- Weight management: Reducing body fat reduces pressure on the anal sacs and improves natural expression.
- Probiotics: For dogs with recurrent soft stool, a high-quality probiotic can firm up bowel movements and reduce gland fill frequency.
When to Seek Veterinary Care
Schedule a veterinary appointment if you observe any of the following:
- Blood or pus in the expressed fluid
- Persistent scooting after expression attempts
- Swelling or heat around the anus
- Reluctance to sit or defecate normally
- Recurring fullness requiring expression more than once every 3 to 4 weeks
Anal gland problems rarely resolve on their own. If your dog has had two or more episodes of impaction or infection, discuss long-term management options with your veterinarian, including possible surgical removal of the sacs (anal sacculectomy) in severe, recurrent cases.
Final note: Home expression is a maintenance technique, not a treatment for disease. If your dog shows signs of pain, infection, or persistent fullness, professional evaluation is the safest and most effective path to resolution.