Anal Glands — The Real Fix Isn't More Expressions

Scooting on the carpet. A strong fishy smell that lingers on the bedding. The dog suddenly sits down and looks back at his own butt. These aren't quirks — they're anal glands. And in Frenchies, the cycle is almost always driven by something further upstream.

I. What Anal Glands Are

Two pea-sized scent sacs at 4 and 8 o'clock of the anus, just inside the anal sphincter. They produce a thick, oily, foul-smelling secretion that normally empties through tiny ducts when the dog poops — firm stool presses against the sacs and squeezes them.

Originally a territorial-marking and scent-ID system. Modern dogs don't really need them.

II. Why Frenchies Are Prone

O'Neill et al. 2021 VetCompass (n=104,212 UK dogs):

• Anal sac disorder (ASD) 1-year prevalence: 4.40%
• Brachycephalic = 2.62× odds vs dolichocephalic (long-nosed)

French Bulldog VetCompass 2021:

• Anal sac impaction: 4.5% (OR 1.27, 95% CI 1.03–1.55)
• Any anal sac disorder: 5.1% (OR 1.31, 95% CI 1.08–1.58)

Why the predisposition

1. Narrow ducts — brachycephalic pelvic floor and sphincter geometry produce narrower ductal openings that clog easily.
2. Tight tail-set / short body — screw or stub tails sit close to the anus, providing less external muscle support.
3. Soft stool — the dominant driver. About 49% of Frenchies have food hypersensitivity, which produces soft stool, no pressure on the sacs, and impaction.

III. The Four Stages of Trouble

Recurrence rates vary widely between studies and clinical experience — ask your vet about specific risk for your dog.

IV. The Symptoms Owners Recognize

• Scooting — dragging the rear across carpet or grass.
• Excessive licking or chewing at the rear (ironic, since most Frenchies can't really reach).
• Strong fishy or metallic smell that lingers on bedding.
• Sudden sitting and looking back.
• Reluctance to sit, sitting awkwardly.
• Abscess: visible swelling, redness, hot to the touch, blood or pus on bedding, fever.

V. Manual Expression — Vet, Groomer, or DIY

Vet (internal expression)

• Finger inserted into rectum.
• Gland squeezed between thumb and finger.
• Empties completely.

Groomer (external expression)

• Squeeze through skin from outside.
• Often incomplete; only expresses loose superficial fluid.
• Repeated external squeezing → inflammation, scarring.

DIY

• Possible for confident owners with internal-technique training from a vet.
• Most veterinary dermatologists actively discourage DIY.
• Routine non-medical expression should NOT be done on dogs that don't need it.
• Repeated unnecessary expression → ductal trauma → scarring → impaction → more expressions = self-perpetuating cycle.

VI. Frequency — How Often

• Frenchies that genuinely need it: every 4–8 weeks realistic.
• Some dogs go years without intervention.
• Some need monthly.
• DON'T express more often than every 4 weeks — more harm than benefit.
• If your dog needs more often → address the underlying cause (allergies, soft stool, weight).

VII. Diet & Prevention — The Highest Leverage

Single highest-leverage intervention: firm, bulky stool. Sacs only empty correctly when stool exerts the right pressure on the sphincter walls.

• Increase insoluble fiber — most adult dogs do well at 2.5–5% fiber dry-matter; ASD-prone dogs ≥5%.
• Plain canned pumpkin (NOT pie filling — must be 100% pumpkin) — 1–2 tbsp per meal for an average Frenchie.
• Psyllium husk / Metamucil — 1/4 to 1/2 tsp per 10 lb body weight added to food (vet should confirm).
• Identify the allergy — most chronic Frenchie anal-gland cases resolve when food allergy is identified (8-week elimination diet) or atopy is treated.
• Weight — obesity makes everything anatomically worse. Pelvic fat compresses ducts.

Spike's reality  ·  Dominican Republic

"The pattern Igor sees over and over: dogs that 'always need expressing' usually have an undiagnosed food allergy. Fix the diet, fix the stool, fix the glands. Skip that step and you're trapped in the expression cycle forever."

VIII. Surgery for Chronic Cases — Anal Sacculectomy

Reserved for persistent, painful, recurrent disease. Less than 1% of UK ASD cases per VetCompass.

• Overall complication rate: ~32%.
• Temporary fecal incontinence: 14–33% — usually resolves within weeks.
• Permanent fecal incontinence: rare with good technique (0% in published series of 62 closed bilateral procedures).
• Closed technique preferred over open.
• Smaller dogs <15 kg (most Frenchies) carry slightly higher complication rates → choose a surgeon with breed-specific experience.

IX. Common Owner Mistakes

1. "It's just worms." Scooting is anal glands ~95% of the time, not worms.
2. Skipping the check because "dog seems fine." Frenchies are stoic; they tolerate impaction until rupture. By the time they're crying, you're at abscess plus a $300–1,000 emergency visit.
3. Routine groomer expression "just because." Only express if symptomatic. Excessive = scarring = more impactions.
4. Ignoring soft stool. The long game is firm stool, not more frequent expressions.
5. DIY expression without training. Wrong-direction pressure can rupture the duct.