Anal sacculectomy — surgical removal of the anal sacs — costs roughly $900 to $2,800 for a dog, depending on whether one or both sides are done and whether a specialist performs it.
Before the cost, the complication. It is the reason this decision deserves care.
The risk to understand first
The anal sacs sit directly against the external anal sphincter — the muscle that controls when your dog defecates — and against the nerves supplying it.
Removing the sacs means dissecting them away from that muscle. Damage there can cause faecal incontinence: usually mild and temporary, occasionally severe and permanent.
The rate is low, and it is meaningfully lower in experienced hands. Which makes this a completely fair question to ask, and one you should ask:
"How many of these do you do in a year?"
A surgeon who does them regularly will answer easily and will not mind being asked. This is one of the procedures in veterinary surgery where operator volume genuinely shows up in outcomes.
What the anal sacs do
Two small scent glands, at roughly four and eight o'clock either side of the anus, producing the strong-smelling fluid dogs use to mark territory. It is normally expressed by pressure as the dog defecates.
Dogs do not need them. Removing them costs nothing functionally — the risk lies entirely in what surrounds them.
When surgery is justified
Not for a dog that scoots occasionally. Most anal sac problems are managed without surgery, and irreversible incontinence is too high a price for an untried case.
Surgery becomes reasonable for:
- Recurrent impaction or infection that has failed months of proper management — dietary fibre, weight control, treating any underlying allergy, and regular expression
- Chronic abscessation with repeated ruptures and draining tracts
- A fistula or draining tract that will not resolve
- A tumour — anal sac adenocarcinoma, which is a separate and more serious situation
If nobody has yet asked why your dog's glands keep filling, that is the conversation to have first. Allergy causing soft stools, obesity, and low-fibre diets are all common and treatable drivers.
Anal sac adenocarcinoma
This deserves its own paragraph rather than being folded in with the benign disease.
It is a malignant tumour of the anal sac, often small enough to be found only on a rectal examination, and it commonly spreads to the sublumbar lymph nodes early. Some cases raise blood calcium, causing increased drinking, weakness and appetite loss.
If a mass is found, staging comes before surgery — bloodwork including calcium, abdominal imaging, and chest imaging. The treatment plan usually involves surgery plus removal of affected lymph nodes, and often chemotherapy or radiation. That is a different pathway from removing chronically infected sacs, and it belongs with an oncology team.
The surgery
Under general anaesthetic, using either a closed technique (the sac removed intact) or an open technique (the sac opened to be dissected out under direct vision). Surgeons differ; both are legitimate, and experience with the chosen technique matters more than which one it is.
Some surgeons stage the two sides in higher-risk patients rather than doing both together, which reduces the consequence of a poor outcome on one side.
Recovery
- Home the same day or the next, with pain relief for several days
- A cone for ten to fourteen days, non-negotiable — this is a wound in the one place dogs cannot leave alone
- Soft stools initially, often deliberately, since a firm stool passing a fresh wound is painful
- A recheck at ten to fourteen days
- Some straining, discomfort or mild leakage in the first days is common and usually settles
Call your vet for foul-smelling discharge, wound breakdown, fever, or incontinence that is not improving after the first two weeks.
What to expect long-term
Most dogs are entirely normal afterwards, with the chronic infection and discomfort simply gone — and owners of dogs that had suffered for years are usually glad they did it.
A minority have mild transient loss of control for weeks. A small number have lasting problems, which is the outcome the whole decision turns on.
Weigh it honestly: for a dog with genuinely recurrent, painful, medically unmanageable disease, the trade is usually a good one. For a dog with an occasional flare, it is not yet.
Who isn't a candidate
- Other: An actively infected, ruptured or abscessed sac — the infection is settled first, because operating through inflamed tissue markedly raises the risk of nerve damage and wound breakdown.
- Other: A first-time problem that has not yet been managed medically. Most anal sac disease resolves without surgery, and irreversible incontinence is too high a price for an untried case.
- Concurrent condition: Pre-existing faecal incontinence or a neurological condition affecting the tail and rectum.
- Other: Both sides in one procedure in a high-risk patient, where staging the sides protects continence.
Common questions
How much does anal gland removal cost for a dog?
Roughly $900 to $2,800 depending on whether one or both sides are removed and whether a board-certified surgeon performs it. A specialist costs more, and for this procedure that is often money well spent — the main complication rate falls with surgeon experience. Cases involving a tumour cost considerably more once staging and adjunctive treatment are included.
Can a dog become incontinent after anal gland surgery?
Yes, and this is the risk to weigh. The anal sacs sit directly against the external anal sphincter and its nerves, so dissection can damage them. Most incontinence is mild and temporary; a small number of dogs are permanently affected. Rates are low and are lower with experienced surgeons, which makes "how many of these do you do a year" a fair and useful question.
When should a dog's anal glands be removed?
For recurrent impaction or infection that has failed months of proper management, chronic abscessation with repeated ruptures, a persistent draining tract, or a tumour. Not for occasional scooting. Most anal sac disease is manageable without surgery, and it is worth asking why the glands keep filling — allergy causing soft stools, obesity and low-fibre diets are common treatable causes.
How long is recovery after anal sacculectomy?
Home the same day or the next, with pain relief for several days and a cone for ten to fourteen days without exception. Stools are often deliberately kept soft at first, since a firm stool passing a fresh wound is painful. A recheck happens at ten to fourteen days. Some straining or mild leakage in the first days is common and usually settles.
What happens if a dog's anal gland abscess is untreated?
It typically ruptures through the skin beside the anus, leaving an open, painful, infected wound that drains. Repeated cycles of abscess and rupture cause scarring and chronic tracts that become harder to resolve. A dog with a hot, swollen, painful area beside the anus needs to be seen promptly rather than left to burst.
Sources
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