How Do You Clean a Dog's Anal Glands? Complete Care & Treatment Guide

If you've noticed your dog scooting across the carpet, obsessively licking their tail area, or emitting a sudden fishy odor, you're likely dealing with anal gland issues — one of the most common complaints in veterinary clinics. Anal sac disease encompasses a spectrum of conditions ranging from simple impaction to infection, abscess formation, and, rarely, rupture or adenocarcinoma. Small-breed dogs are disproportionately affected, with estimates suggesting that up to 12% of dogs will experience anal gland problems at some point in their lives, according to the Merck Veterinary Manual.

This guide walks you through exactly how anal glands work, when and how they need to be expressed, what a veterinary professional does during a cleaning, and how to recognize problems before they escalate. While many groomers offer external expression as a routine service, understanding the underlying anatomy and disease progression is essential for any dog owner.

What Are Anal Glands and What Is Anal Sac Disease?

Dogs have two small pouches called anal sacs (commonly called anal glands) located at approximately the 4 o'clock and 8 o'clock positions just inside the anus. These sacs are lined with sebaceous and apocrine glands that produce a pungent, oily secretion — typically brown, yellow, or gray — that serves as a territorial marker and individual scent identifier. In the wild, canids naturally express these sacs during defecation or when frightened, as the pressure of passing stool compresses the sacs and forces secretion out through small ducts.

Anal sac disease is the umbrella term for any condition affecting these structures. It progresses through several stages:

1. Impaction: Secretion thickens and accumulates because the sacs aren't emptying naturally. This is the most common form.
2. Sacculitis (inflammation/infection): Bacteria proliferate in the stagnant material, causing inflammation of the sac lining.
3. Abscess: Infection progresses to pus formation, creating a painful, swollen mass adjacent to the anus.
4. Rupture: The abscess bursts through the skin, creating an open, draining wound beside the anus.
5. Adenocarcinoma (rare): A malignant tumor of the anal sac gland tissue, most common in older dogs.

The condition is not contagious and is not caused by poor hygiene. It's fundamentally a mechanical drainage problem — the sacs aren't emptying as they should, and everything downstream follows from that.

Symptoms of Anal Gland Problems: Early Warning Signs vs. Advanced Disease

Recognizing symptoms early can save your dog significant discomfort and you significant expense. Symptoms progress in severity as the condition worsens.

A common misconception is that scooting always means worms. While intestinal parasites can cause perianal itching, anal sac impaction is a far more common cause of scooting in dogs. If your dog is up to date on deworming and still scooting, anal glands should be your first suspicion.

Risk Factors: Which Dogs Are Most Prone to Anal Gland Issues?

Large-breed dogs like German Shepherds and Labrador Retrievers are less commonly affected, but when they do develop anal sac disease, it tends to present more severely. This may be because owners and groomers are less likely to routinely check glands on large breeds, allowing problems to progress further before detection.

There's also a seasonal component many veterinary clinics observe: anal sac problems spike in late summer and early fall. The leading theory is that seasonal environmental allergies cause perianal inflammation, which narrows the duct openings and impedes drainage.

How Are Anal Gland Problems Diagnosed at the Vet?

Diagnosis is typically straightforward and does not require extensive testing for routine impaction or infection. Here's what to expect during a veterinary visit:

For a routine impaction visit, expect to be in and out in 15-20 minutes with just the office visit fee plus expression charges. For a suspected abscess or rupture, plan for a longer visit with possible sedation, flushing, and medication dispensing.

How Do You Clean a Dog's Anal Glands? Expression Techniques Explained

This is the question that brought you here, and the answer has important nuances. There are two methods of anal gland expression, and they are not interchangeable:

External Expression (Groomer Method)

External expression involves placing a tissue or gauze over the anus and applying pressure from outside, squeezing the sacs through the skin. This is what most groomers do as part of a bath-and-brush service.

Limitations: External expression only removes liquid contents near the duct opening. It does not fully empty impacted sacs containing thick, pasty material. Many veterinary behaviorists and dermatologists actually advise against routine external expression in asymptomatic dogs because repeated manual pressure can traumatize the duct tissue, causing inflammation and scarring that paradoxically creates drainage problems in dogs who previously had none.

Internal Expression (Veterinary Method)

Internal expression is the gold standard for treating impaction and is what your veterinarian performs. Here's the process:

1. The dog is restrained standing or in lateral recumbency (on their side).
2. The vet inserts a gloved, lubricated index finger into the rectum.
3. Each sac is identified between the index finger (inside) and thumb (outside).
4. Gentle, firm pressure is applied, milking the sac from deep to superficial — pushing contents toward and out through the duct opening.
5. The expressed material is caught with gauze and examined for color, consistency, blood, and odor.
6. If infection is present, the sac may be flushed with a dilute antiseptic solution (chlorhexidine or povidone-iodine) through a small catheter inserted into the duct.

Can you do this at home? Technically, yes — some experienced owners of dogs with chronic impaction learn to perform internal expression under veterinary guidance. However, most veterinarians strongly recommend against it for several reasons: you can rupture an infected sac internally, causing cellulitis; you can damage the duct or sphincter with improper technique; and you may miss early signs of neoplasia that a trained professional would catch. If your dog needs expression every 2-4 weeks, the better long-term solution is addressing the underlying cause rather than perpetually managing the symptom.

Treatment Options for Anal Sac Disease

About Surgical Removal (Anal Sacculectomy)

For dogs suffering from recurrent impaction, repeated infections, or abscesses — typically defined as 4+ episodes within 12 months — surgical removal of both anal sacs is a well-established, curative procedure. The surgery takes 30-60 minutes under general anesthesia. The most significant complication is temporary fecal incontinence, which occurs in approximately 3-5% of cases and usually resolves within 2-4 weeks as the external anal sphincter recovers from surgical inflammation. Permanent incontinence is rare when the procedure is performed by an experienced surgeon.

Many owners worry that removing the glands will affect their dog's quality of life. In practice, dogs don't miss them. The scent-marking function is vestigial in domestic dogs, and most owners report that their dog is noticeably happier and more comfortable post-surgery — free from the chronic discomfort they'd been silently enduring.

Home Care, Management, and Prevention Strategies

Whether your dog has just had their glands expressed or you're trying to prevent problems from developing, these management strategies make a measurable difference:

Dietary Fiber Optimization

This is the single most impactful preventive measure. Firm, bulky stools naturally compress the anal sacs during defecation, promoting regular emptying. Here's how to achieve that:

• Fiber supplements: Add 1-2 teaspoons of plain canned pumpkin (not pie filling) per 10 lb (4.5 kg) of body weight to meals daily. Alternatively, psyllium husk powder at ¼ teaspoon per 10 lb body weight, mixed with food and water.
• High-fiber therapeutic diets: Prescription diets like Royal Canin Gastrointestinal High Fiber or Hill's Prescription Diet w/d contain 8-12% crude fiber and are specifically formulated to produce firm, bulky stools. These require veterinary authorization and typically cost $45-$70 per 25 lb bag.
• Over-the-counter high-fiber options: Look for commercial foods with 5-8% crude fiber on the guaranteed analysis. Foods with beet pulp, cellulose, or pea fiber as named fiber sources tend to produce better stool quality than those relying solely on grain-based fiber.

Weight Management

Overweight dogs have excess fat surrounding the anal sacs, which physically prevents the surrounding musculature from compressing the sacs during defecation. Getting your dog to an ideal body condition score (BCS 4-5/9) can significantly reduce impaction frequency. For a dog currently at BCS 7/9, this typically means reducing caloric intake by 15-20% and increasing daily exercise by 15-20 minutes.

Allergy Management

If your dog has environmental allergies (atopic dermatitis), the perianal skin and duct linings are often inflamed as part of the generalized allergic response. Working with your veterinarian to control allergies — through Apoquel (oclacitinib), Cytopoint (lokivetmab), allergen-specific immunotherapy, or a hydrolyzed protein diet trial — often reduces anal sac inflammation as a secondary benefit. Many owners don't realize these issues are connected.

What NOT to Do

• Don't request routine expression for asymptomatic dogs. The American Kennel Club and many veterinary dermatologists advise against prophylactic expression in dogs showing no symptoms, as it can create inflammation and dependency.
• Don't use over-the-counter anal gland supplements without veterinary guidance. Many products marketed for "anal gland health" are simply generic fiber supplements at inflated prices. Plain pumpkin or psyllium is equally effective and far cheaper.
• Don't ignore soft stools. Chronic diarrhea or soft stool is the most common preventable cause of anal sac impaction. If your dog consistently has loose stools (Purina Faecal Scoring System 5-7), address the underlying GI issue with your vet.

Cost Breakdown: What to Budget for Anal Gland Care

Anal gland issues range from inexpensive routine maintenance to significant surgical costs. Here's a realistic breakdown based on 2026 veterinary pricing across the United States:

Annual budget planning: For a dog with chronic anal sac issues requiring expression every 4-6 weeks, expect to spend $400-$900 annually on routine veterinary visits. If problems escalate to recurrent infection or abscess, annual costs can reach $1,500-$3,000. At that point, surgical removal — while expensive upfront — often proves more cost-effective within 1-2 years.

Prognosis and Life Expectancy

For the vast majority of dogs, anal sac disease is a manageable nuisance condition with an excellent prognosis. Dogs with simple impaction or infection that receive appropriate treatment return to normal comfort within 3-7 days. There is no impact on life expectancy.

Even dogs requiring surgical removal of the anal sacs have an excellent long-term prognosis. The procedure is curative, and post-surgical complications are uncommon and typically temporary. These dogs live full, normal lifespans without any lasting quality-of-life impact.

The only scenario where anal sac disease carries a guarded prognosis is anal sac adenocarcinoma, a malignant tumor most commonly diagnosed in older dogs (average age 10-11 years). This cancer has a tendency to metastasize to the sublumbar lymph nodes and can cause paraneoplastic hypercalcemia (elevated blood calcium). With surgery alone, median survival time is approximately 12-18 months. With multimodal treatment including surgery, radiation, and chemotherapy, some dogs survive 24-30 months or longer. This tumor is relatively rare, representing fewer than 2% of all anal sac disease cases.

Frequently Asked Questions

How often should a dog's anal glands be expressed?

Only when needed. Most dogs self-express naturally during defecation and never need manual expression. Dogs prone to impaction may need expression every 3-6 weeks. The current veterinary consensus, as noted by the AVMA, is to express only when clinical signs are present — not on a fixed schedule. Prophylactic expression of normal glands can cause inflammation and create problems where none existed.

Can I express my dog's anal glands at home?

External expression (squeezing from outside) is technically possible but often ineffective for impacted glands and can cause tissue trauma if done incorrectly. Internal expression requires training and carries risks of duct damage or internal rupture if performed improperly. Most veterinarians recommend leaving expression to professionals. If cost is a concern, some vet clinics offer discounted "tech visits" for expression-only appointments at $20-$35 without a full exam fee.

Does adding fiber to my dog's diet really help?

Yes — this is the most evidence-supported preventive measure. Fiber increases stool bulk and firmness, which creates the internal pressure needed to naturally empty the anal sacs during defecation. Start with 1 teaspoon of plain canned pumpkin per 10 lb (4.5 kg) of body weight per meal and adjust up to 2 teaspoons based on stool quality results. You should see improvement in stool firmness within 3-5 days.

My dog's anal glands were just expressed last week and they're scooting again. Is that normal?

Rapid re-filling can happen, especially if the underlying cause (soft stools, allergies, obesity) hasn't been addressed. However, it can also indicate that the glands weren't fully emptied — external expression sometimes leaves residual thick material behind. Request an internal expression at your vet's office to ensure complete emptying, and work with your vet to identify and treat the root cause.

Are anal gland supplements worth buying?

Most commercial "anal gland support" supplements are fiber blends (psyllium, pumpkin, oat fiber) with added probiotics, sold at $15-$35 per container. The fiber component can be helpful, but you can achieve the same result with plain canned pumpkin ($2-$3 per can) or psyllium husk powder ($8-$12 for a large container). The probiotics may benefit overall GI health, but there's no published evidence that they specifically prevent anal sac impaction. Save your money and focus on dietary fiber and stool quality.

What breeds are most prone to anal gland problems?

Small breeds are disproportionately affected. The breeds most commonly presented for anal sac disease include Chihuahuas, Toy and Miniature Poodles, Cocker Spaniels, Dachshunds, Miniature Schnauzers, Bichon Frises, Lhasa Apsos, and Beagles. However, any breed can be affected, and obese dogs of any size are at elevated risk.

Can anal gland problems be completely cured?

Simple impaction and infection are highly treatable, though recurrence is common if predisposing factors aren't addressed. For dogs with chronic, recurrent disease, bilateral anal sacculectomy (surgical removal) is a permanent cure with a 95%+ success rate and minimal long-term side effects. Anal sac adenocarcinoma is treatable but generally not curable, with management focused on extending quality of life.