Pimples on your dog's chin, lip, or muzzle? Upload a photo and get an instant AI assessment of canine acne — including puppy acne, severity stage, and whether it's acne or mange.
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This tool provides AI-generated preliminary analysis only. Not a substitute for professional veterinary diagnosis.
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Take a clear, close-up photo of your dog's chin, lower lip, or wherever the pimples are. The AI needs to see redness, bumps, pustules, or blackheads clearly.

Our AI examines the skin for blackheads, pimples, pustules, inflammation, and patterns that distinguish canine acne from mange, folliculitis, or contact dermatitis.

Receive a detailed report with the likely diagnosis, severity stage, home care steps, and whether you need to see a vet.
Canine acne most commonly affects the chin and lower lip, but can also appear on the muzzle, face, and occasionally the body. Here's what each stage looks like and how to tell dog acne apart from mange or other skin infections. Also try our dog skin checker or cat acne checker or dog bug identifier.
Mild canine acne starts as small black dots or skin-colored bumps clustered on the chin and lower lip. These are comedones — plugged hair follicles filled with oil and keratin that oxidize to a black color. Dogs with just a few blackheads are usually unbothered — no itching, no pain, no inflammation. This is the earliest and most treatable stage. Simple intervention works: switch plastic food and water bowls to stainless steel, ceramic, or glass; wash bowls daily with hot soapy water; and gently wipe the chin once a day with a warm damp cloth. Mild cases typically clear in 2-4 weeks. Do NOT try to squeeze or pick at blackheads — this triggers the progression to inflamed pimples and can cause scarring. What causes dog chin blackheads? Plastic bowl contact, face-rubbing on rough surfaces, excess sebum production, and sometimes early signs of underlying allergies.


Moderate canine acne progresses beyond blackheads to inflamed red bumps (papules) and white-tipped pimples (pustules). The chin may look swollen or pink, and your dog may rub their face on carpet, furniture, or you. Pimples that burst or are scratched open leave small scabs. At this stage, hair follicles have become infected with Staphylococcus bacteria — the same bacteria normally found on dog skin, but now multiplying in the plugged follicles. Home care for moderate dog acne: continue bowl changes, add daily chlorhexidine wipes OR a pet-formulated benzoyl peroxide shampoo (OxyDex, Pyoben, DermaBenSs) 2-3x per week. Warm compresses for 2-3 minutes twice daily help bring pustules to a head. Most moderate cases clear in 4-6 weeks. If bumps spread or haven't improved in 2 weeks, see a vet — short-course oral antibiotics dramatically speed recovery.
Severe canine acne is a veterinary problem. Signs: the chin or muzzle is visibly swollen beyond its normal outline, lesions are draining pus or blood, multiple large scabs, hair loss around affected area, your dog flinches when touched, reduced eating, or lethargy. Severe cases involve deep folliculitis (infection below the skin surface) or furunculosis (ruptured infected follicles). Home care alone is rarely enough — vets typically prescribe oral antibiotics (cephalexin, clindamycin, or similar) for 3-4 weeks, often combined with pet-formulated benzoyl peroxide shampoo or chlorhexidine washes. In stubborn cases a skin culture guides antibiotic selection. Recovery takes 4-8 weeks. Do NOT clean severe acne aggressively at home — scrubbing spreads infection. A swollen chin, bleeding pimples, or a dog off food is a same-week vet visit.


Puppy acne is a specific presentation during canine puberty, typically between 5 and 12 months of age. It appears as red bumps and pimples on the chin, muzzle, and sometimes the face or head. The cause is hormonal — testosterone and related hormones surge during sexual maturity, stimulating oil glands and triggering follicle plugging. Breeds most prone: Boxers, Bulldogs (English and French), Great Danes, Mastiffs, Rottweilers, Dobermans, German Shorthaired Pointers, Weimaraners. Most puppy acne resolves on its own by 12-16 months as hormones stabilize — often without any treatment. During active flares, switch to non-plastic bowls, wipe the chin gently 1-2x daily, and avoid letting the puppy rub against rough carpets or bedding. Severe or persistent puppy acne (past 18 months, or with bleeding/swelling) warrants vet evaluation — it may indicate underlying allergies or immune issues.
While most dog acne is on the chin, lesions can appear in several other locations. Lip acne: small red bumps along the lip margin, often an extension of chin acne. Muzzle acne: pimples across the short-haired upper snout, common in Bulldogs and Boxers from contact with furniture or toys. Acne on the face or head: less common, often linked to allergies rather than contact — may extend to the area around the eyes in severe cases. Acne on the back or body: rare and suggests an underlying cause — check for flea allergies, food allergies, or bacterial folliculitis from a dirty collar, harness, or bedding. Acne on the belly: sometimes seen in intact male dogs due to hormones or in any dog lying on rough surfaces. Location helps narrow down the trigger — acne on one spot from a contact source vs acne spread across the body from an internal cause.


Several conditions look similar to dog acne at first glance, but need very different treatments. Canine acne: pimples and blackheads clustered on the chin and lower lip, no hair loss, mild to no itching, dog otherwise healthy. Demodectic mange: patchy hair loss with darkening and scaliness — usually starts around eyes/muzzle/paws, not pimply. Diagnosed by skin scraping under microscope. Sarcoptic mange (scabies): intense itching across the body (especially ear edges, elbows, belly), crusty skin, not pimple-like. Highly contagious. Bacterial folliculitis / pyoderma: pustules that look like acne but spread across the body, not limited to the chin. Food allergy: pimples/redness that may involve the face but also ears, belly, paws; usually itchy. Contact dermatitis: red rash on the chin after contact with plastic, detergents, or new materials — flat redness rather than distinct pimples. If you see HAIR LOSS + intense itching + spreading pattern → suspect mange, see a vet urgently. If limited to chin + no hair loss → most likely acne.
Upload a photo now. Our AI will tell you whether it's canine acne, puppy acne, folliculitis, or mange — plus severity stage, home care steps, and when to see a vet.
Check Dog Acne Now →PawCheck provides AI-generated preliminary health analysis for informational and educational purposes only. This service is not intended to replace professional veterinary advice, diagnosis, or treatment. The AI analysis has inherent limitations and may not always be accurate. Always seek the advice of a qualified, licensed veterinarian with any questions regarding your pet's health. Never disregard professional veterinary advice or delay in seeking it because of information provided by this tool. If your pet is experiencing a medical emergency, contact your veterinarian or emergency animal hospital immediately. By using this service, you acknowledge and agree to these terms.

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