Dog Anal Glands: Signs of Trouble and Treatment
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By Dr Duncan Houston
A dog dragging their bottom across the floor can look comical, but repeated scooting often means discomfort. Anal sacs are one possible cause, particularly when licking, a strong fishy smell or a tender swelling accompanies the behaviour. The useful next step is to find the cause rather than automatically squeeze the glands.
Quick Answer
Dogs have two anal sacs beside the anus that usually empty small amounts of scent material during toileting. They can become blocked, inflamed or infected, and some develop abscesses. Persistent scooting needs a veterinary examination; pain, swelling, blood, pus or illness warrants prompt care, and home expression can worsen a painful problem.
What are anal glands?
The terms anal glands and anal sacs are often used interchangeably. The sacs are small pouches whose lining produces a strong-smelling secretion. Most dogs do not need owners to do anything to maintain them.
Occasional scent release can happen without disease. A one-off smell is different from a dog repeatedly chewing the area, struggling to sit comfortably or leaving bloody discharge. Note what you see rather than trying to judge the problem from smell alone.
How anal sac problems develop
Impaction means material is not emptying normally. Inflammation of the sac is called anal sacculitis, and infection can lead to an abscess. An abscess may eventually rupture through the skin near the anus. A draining hole is not proof that the problem has resolved.
Cornell's anal sac disease information describes these conditions and notes that stool problems, obesity and allergic skin disease may contribute in some dogs. Recurrent trouble deserves investigation of those contributors rather than an endless sequence of expression appointments alone.
A firm or persistent lump needs assessment too. Anal sac tumours are less common than routine inflammatory problems, but owners cannot reliably distinguish them by looking at the outside.
Is every scooting dog having gland trouble?
| What you notice | Possible explanations | Useful next step |
|---|---|---|
| Repeated scooting or licking | Anal sac discomfort, irritated skin, parasites or faeces caught in the coat | Arrange an examination if it persists or returns. |
| Painful swelling beside the anus | Inflammation, an abscess or another local lesion | Contact your vet promptly; avoid pressing it. |
| Soft stools and a sore bottom | Digestive illness and skin irritation, with or without sac disease | Report both the stool change and the discomfort. |
| A firm lump or recurring one-sided problem | A mass or other structural problem needs exclusion | Book veterinary assessment rather than repeated home treatment. |
| Straining during toileting | Constipation, rectal disease or urinary difficulty | Check whether urine is passing; inability to urinate is an emergency. |
What the vet may do
Your vet examines the skin and may perform a rectal examination to assess each sac. A painful dog may need sedation so the examination and treatment can be carried out safely. Tell the team if your dog has snapped during handling; this is useful information about pain and safety, not bad behaviour to punish.
Treatment depends on the findings. An impacted sac may need careful emptying, while inflamed or infected sacs may require flushing, local treatment, pain relief or antibiotics where indicated. Antibiotics are not automatically necessary for every full sac. Research on local treatment of canine anal sacculitis illustrates that management can involve targeted treatment rather than repeated systemic medication alone.
If a mass is suspected, your vet may recommend sampling and further tests. The American College of Veterinary Surgeons explains anal sac tumours, including why even a small mass may require investigation. Increased thirst, changed urination or difficulty passing stools should be mentioned at that visit.
Safe care while arranging an appointment
- Prevent repeated licking with a suitable protective collar if your dog tolerates it safely.
- Keep bedding clean and note any discharge, swelling or changes in toileting.
- Avoid squeezing, inserting anything into the anus or attempting to lance a swelling.
- Do not apply human haemorrhoid creams, disinfectants, essential oils or leftover medication.
- Keep children away from the painful area and avoid handling that makes your dog tense or defensive.
If there is surface soiling, ask the clinic how to clean it gently. Do not turn cleaning into a struggle or cut close to tender skin with scissors. A photograph taken without restraint can help explain what has changed, but it does not replace an examination.
When is it urgent?
Seek prompt veterinary care for a painful swelling, blood or pus, a ruptured area, marked reluctance to sit or pain when passing stools. A dog who is weak, very lethargic, vomiting, unable to pass stools or showing severe distress needs urgent assessment. Repeated straining with little or no urine is an emergency even if you initially thought the anal glands were responsible.
Reducing repeated episodes
Keep a record of episodes alongside stool consistency, diet changes and skin flare-ups. Your vet can use that pattern to decide whether allergy management, treatment of digestive disease or weight management is relevant.
Extra fibre may suit some dogs, but pumpkin, supplements and probiotics are not universal solutions. Adding large quantities can unbalance meals or worsen digestive signs. Ask for a plan suited to your dog's diet and medical history.
Healthy dogs do not all need scheduled gland expression. For recurrent disease, the frequency of checks should be individual. Surgery may be considered in selected difficult cases, with discussion of potential complications including changes in faecal control.
Frequently Asked Questions
Does a fishy smell always mean infection?
No. Normal secretion can smell strong. Persistent smell with pain, licking or discharge is more concerning.
Can a groomer solve every anal gland problem?
No. Pain, swelling, blood, recurrence and suspected infection need veterinary assessment rather than routine grooming care.
Should I express the glands myself?
Do not start without veterinary assessment and instruction. Painful or abnormal sacs are particularly unsuitable for home squeezing.
Will worm treatment stop scooting?
Only if the relevant parasite problem is responsible and the treatment is appropriate. Scooting alone does not identify worms.
If you are unsure how urgently your dog's scooting or anal discomfort needs attention, ASK A VET™ can help you organise the signs to discuss with your vet.
