DOGS · Symptom guide
Dog scooting and licking under the tail: what real cases identify
Scooting — dragging the rear end across the floor — is a classic owner observation that almost always means discomfort under the tail. In published case reviews and primary-care data, the by-far most common explanation is anal sac disease (impaction, sacculitis, or abscess), affecting roughly 1 in 20 dogs each year. Less commonly: tapeworm infestation (the segments cause perianal irritation), perianal fistulas (especially in German Shepherds), or — uncommon but serious — anal sac adenocarcinoma.
The diagnostic process is usually quick: a digital rectal exam tells the vet whether the sacs are impacted, infected, or if there's a firm mass that demands aspiration. Most cases resolve with manual expression and (if infected) antibiotics. The cases below show real workups for scooting dogs and what they turned out to be.
When to see a vet now
- Firm one-sided swelling at the anal sac site that doesn't go away with expression — workup for anal sac adenocarcinoma.
- Ruptured anal sac (purple-black draining wound next to the anus) — needs same-day antibiotics and pain relief.
- Persistent straining, blood in stool, or weight loss alongside scooting.
- High blood calcium on bloodwork — paraneoplastic sign of anal sac adenocarcinoma.
- Scooting in an intact young dog with skin breakdown around the anus — consider perianal fistula.
Real cases from the veterinary literature
A teaser of peer-reviewed reports our semantic search surfaces for this complaint. Click into any case for the full abstract — or run a personalised search with your pet's exact details.
- Combined use of polypropylene mesh and collagen sponge in the surgical repair of perineal hernia with rectal diverticulum in a dog.
Journal Article · 2025
A 5-year-old neutered male Maltese terrier was brought in for difficulty passing stool, straining, and a painful swelling near his rear end. X-rays showed a hernia and a pouch filled with feces, which confirmed the diagnosis. The vet performed surgery to remove the diverticulum (the pouch) and repair the hernia using special materials to strengthen the repair. After surgery, th
- Literature review and authors' consensus recommendations for the medical management of perianal fistulae in dogs.
Veterinary dermatology (Print) · 2025
A 5-year-old German Shepherd was suffering from painful perianal fistulae, a condition that can make it difficult for dogs to sit comfortably and can lead to recurrent infections. The vet recommended ciclosporin as the first-line treatment, which is an immunosuppressive medication that helps reduce inflammation. If ciclosporin didn't work, the vet suggested combining prednisolo
- Dogs neutered prior to perineal herniorrhaphy or that develop postoperative fecal incontinence are at an increased risk for perineal hernia recurrence.
Journal of the American Veterinary Medical Association · 2025
A study looked at male dogs that had surgery to fix a perineal hernia, which is a condition where tissue pushes through the pelvic area. It found that dogs neutered before this surgery were more likely to have the hernia come back afterward, as were those that experienced fecal incontinence (difficulty controlling bowel movements) after the operation. Specifically, dogs neutere
- Literature review and authors' consensus recommendations for the medical management of perianal fistulae in dogs.
Veterinary dermatology · 2025 · France
A 5-year-old German Shepherd was suffering from painful perianal fistulae, which are sores around the anus that can be very uncomfortable for dogs. After reviewing various treatment options, veterinarians recommend starting with ciclosporin, a medication that helps reduce inflammation and improve healing. If ciclosporin doesn’t work, they suggest trying a combination of prednis
- Efficacy of an oral chew containing fibre and Bacillus velezensis C-3102 in the management of anal sac impaction in dogs.
Veterinary dermatology · 2025 · Spain
A group of 35 dogs with anal sac impaction, a common issue that can cause discomfort and require manual emptying, were studied to see if a special chew containing probiotics and fiber could help. Over 90 days, 22 dogs received the chew while 13 did not. The dogs that took the chew had a much lower rate of needing manual expression of their anal sacs compared to those that didn’
- Nodular hyperplasia of lymphoglandular complexes in dogs: A potential diagnostic pitfall for rectal masses.
Veterinary pathology · 2024 · Australia
A 5-year-old male Beagle and a 7-year-old male Labrador were brought to the vet due to straining to defecate (tenesmus) and passing blood in their stool (hematochezia). After examining and removing the rectal masses, tests showed that these growths were made up of lymphoid tissue, which is part of the immune system. The diagnosis was nodular hyperplasia of lymphoglandular compl
Frequently asked questions
- Should I be expressing the glands at home?
- Only if your vet has shown you and your dog is having recurrent impactions. Routine prophylactic expression in asymptomatic dogs isn't recommended — it can actually irritate the sacs. Better to wait for clinical signs (scooting, licking, swelling) and address them when they appear.
- Could it just be worms?
- Possibly — tapeworm segments (small white grains around the anus) cause perianal irritation and scooting. A routine deworming with praziquantel is cheap, safe, and often diagnostic. If scooting continues after deworming, focus shifts back to anal sacs.
- When should I worry about cancer?
- Any persistent, asymmetric, firm swelling at the anal sac site warrants a fine-needle aspirate. Anal sac adenocarcinoma is uncommon but malignant — early detection matters. A blood calcium check (paraneoplastic hypercalcemia is a hallmark) is a useful adjunct test.