The most effective things you can do for your dog’s anal glands are increase dietary fiber, maintain a healthy weight, and have a vet express the glands when they’re full. Anal gland problems affect roughly 1 in 6 dogs, with impaction being the most common issue at nearly 9% of all dogs. The good news is that most cases are manageable with straightforward changes at home and occasional professional help.
Why Anal Glands Get Blocked
Dogs have two small sacs sitting just inside the anus, at roughly the 4 o’clock and 8 o’clock positions. These glands produce a strong-smelling liquid that normally gets squeezed out naturally every time your dog passes a firm stool. The pressure of the stool against the glands does the work.
Problems start when that natural emptying doesn’t happen. Soft or loose stools don’t create enough pressure, so the fluid stays trapped. Over time, the contents thicken into a paste-like consistency, the sac swells, and your dog becomes uncomfortable. This is impaction, and if it’s not addressed, the trapped material can become infected (a condition called sacculitis) or progress into a painful abscess that may rupture and leak pus or blood through the skin near the anus.
Signs Your Dog Needs Help
The classic sign is scooting, where your dog drags their rear across the floor. But that’s not the only signal. Dogs with full or impacted glands often lick or bite at the area under their tail, strain during bowel movements, or suddenly turn to look at their backside as if something startled them. You might notice a fishy smell that’s stronger than usual, or see swelling or redness near the anus.
If the area looks swollen, hot, or discolored (especially purple or dark red), or if you see any discharge, the glands may be infected or abscessed. That needs veterinary attention rather than home care.
Fiber Is the Single Best Preventive
Firm, well-formed stools are your dog’s built-in gland-expression system. Adding fiber to your dog’s diet bulks up the stool so it puts more pressure on the glands during each bowel movement. This is the most consistently recommended long-term strategy.
Canned plain pumpkin (not pie filling) is the go-to option. A teaspoon for small dogs or a tablespoon for larger dogs mixed into their food once or twice daily adds soluble fiber that firms up stools without causing constipation. Psyllium husk works similarly and can be sprinkled over food in small amounts. Sweet potato, oat fiber, and rice bran are other effective fiber sources.
Commercial anal gland supplements are essentially fiber blends in a chewable form. A typical product contains pumpkin, psyllium husk, sweet potato, oat fiber, and slippery elm, often combined with probiotics and prebiotics to support overall gut health. These are convenient but not magic. You can achieve the same effect with whole-food fiber sources at a lower cost. If you do use a supplement with probiotics, expect at least one to two weeks before stool consistency noticeably changes.
Keep Your Dog at a Healthy Weight
Obesity is a documented risk factor for anal sac disease in dogs. Excess body fat around the hindquarters can physically interfere with the glands’ ability to empty during defecation. If your dog is overweight and having recurring anal gland problems, weight loss alone may reduce or eliminate the issue. Your vet can help you determine a target weight and feeding plan.
Which Dogs Are Most Prone
Small breeds under 10 kg (about 22 pounds) account for roughly 60% of anal sac disease cases. Chihuahuas top the list at nearly 15% of reported cases, followed by Labrador Retrievers, French Bulldogs, Jack Russell Terriers, Lhasa Apsos, and Beagles. German Shepherds also appear at higher risk because their anal sacs sit deeper in the tissue near the rectum, making natural emptying more difficult.
Diarrhea and chronic skin problems are also predisposing factors. Dogs with allergies, whether environmental or food-related, tend to have more inflammation throughout the body, including in the tissue lining the anal sacs. If your dog has recurring gland issues alongside itchy skin, ear infections, or digestive upset, an underlying allergy may be the root cause worth investigating.
Professional Expression: When and How Often
If your dog’s glands aren’t emptying on their own despite dietary changes, a vet or groomer can manually express them. Veterinarians typically perform internal expression, inserting a gloved finger into the rectum to gently squeeze each sac individually. This is more thorough than the external method groomers often use, which presses on the glands from outside and may not fully empty thickened material.
There’s no universal schedule. Some dogs need expression every four to six weeks, others only a couple of times a year. The key is responding to your dog’s signals rather than expressing on a rigid calendar. Over-expression can irritate the tissue and potentially cause scarring that makes the problem worse over time. If you find yourself needing to go more frequently than every few weeks, that’s a sign the underlying cause (diet, weight, allergies) needs more attention.
Warm Compresses for Mild Discomfort
For mild fullness or discomfort between vet visits, a warm compress can help. Soak a clean cloth in warm (not hot) water, wring it out, and hold it gently against the area for five to ten minutes. This can ease inflammation and encourage the glands to drain a bit more naturally. It’s a comfort measure, not a cure, but it can tide your dog over until you can get to the vet if the glands are only mildly full.
When Surgery Makes Sense
For dogs with chronic, recurring impaction or repeated infections that don’t respond to dietary management, surgical removal of the anal sacs (sacculectomy) is an option. It permanently eliminates the problem.
The main concern owners have is fecal incontinence. The data is reassuring: permanent fecal incontinence after this surgery is rare. Temporary incontinence occurs in about 2% to 15% of cases depending on the size of the lesion being treated, and it resolves on its own. One study of 113 dogs found only 2% experienced temporary incontinence, with all cases resolving completely. The most common complication was the incision site opening slightly during healing, which is typically manageable.
Surgery is generally considered a last resort after other approaches have been tried. But for dogs who are in and out of the vet every few weeks with painful, infected glands, it can dramatically improve quality of life.
A Practical Daily Plan
- Add fiber to every meal. Start with a small amount of pumpkin or psyllium and increase gradually over a week. You want firm stools, not rock-hard ones.
- Monitor stool quality. If stools are consistently soft, mushy, or loose, the glands aren’t getting the mechanical pressure they need. Adjust fiber or talk to your vet about possible food sensitivities.
- Watch for scooting or licking. These are your early warning signs. Address them before the glands progress from full to impacted to infected.
- Maintain a healthy body condition. You should be able to feel your dog’s ribs with light pressure. If you can’t, extra weight may be contributing.
- Keep a log if problems recur. Tracking how often your dog needs expression helps your vet decide whether further workup for allergies or a surgical consultation is warranted.