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.
- Multiple perianal infundibular follicular cysts in a dog.
Veterinary dermatology · 2010 · South Korea
This case involves a 7-year-old male cocker spaniel that developed multiple cysts around its rear end, specifically in the perianal area. The dog was experiencing moderate inflammation of the anal sacs, which likely caused it to scoot and lick the area frequently. Upon examination, the vet found over 100 small, firm bumps, some with a central opening, and there was also hair lo
- Anal sacculectomy.
Compendium (Yardley, PA) · 2008 · United States
Anal sacculectomy is a common surgery for dogs, usually done to treat ongoing problems with their anal sacs, such as chronic anal sacculitis (inflammation of the anal sacs). While the surgery is generally safe, there are some risks involved, including the chance of losing control over bowel movements if the surrounding muscles are damaged, as well as the possibility of infectio
- Cytologically atypical anal sac adenocarcinoma in a dog.
Veterinary clinical pathology · 2012 · Japan
A 10-year-old female Shetland Sheepdog had a lump near her anus and was straining to defecate. Tests showed two different types of abnormal cells in the mass, which were loosely grouped together. The mass was made up of gland-like structures and had some secretory material inside. Based on the tests and the location of the mass, the diagnosis was anal sac adenocarcinoma, a type
- A Cross-Sectional Study on Canine and Feline Anal Sac Disease
Animals · 2021 · CH
This study looked at anal sac disease in dogs and cats, which is a condition that isn't caused by tumors. It found that about 15.7% of dogs and only 0.4% of cats have this issue, with certain factors like diarrhea, skin problems, and being a small breed dog or an overweight dog increasing the risk. The diagnosis is usually made by checking for specific symptoms and examining th
- Evaluation of an anal sac adenocarcinoma tumor in a Spitz dog.
Asian Pacific journal of tropical biomedicine · 2013 · United States
A 9-year-old neutered male Spitz dog was having trouble with straining to poop and was also constipated. He had a lump near his anus and had been drinking and peeing a lot more than usual. Blood tests showed some unusual results, including high cholesterol and calcium levels, which can indicate health issues. After examining the cells from the lump, the diagnosis was an anal sa
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.