Some dog breeds carry a noticeably stronger natural odor than others, and it comes down to biology: how much oil their skin produces, how their ears and skin folds trap moisture, and how prone they are to secondary infections that amplify the smell. Basset Hounds, Cocker Spaniels, Bulldogs, Bloodhounds, and Shar Peis consistently top the list of smelliest breeds. Here’s why certain dogs smell more, what’s normal versus what signals a problem, and how to manage it.
Why Some Breeds Smell Stronger
Every dog has sebaceous glands in their skin that produce sebum, an oily, waxy substance that moisturizes and protects the coat. In some breeds, these glands are genetically programmed to produce far more sebum than average. That extra oil coats the fur, picks up dirt and bacteria, and creates the distinctive “doggy smell” that lingers on furniture and clothes. Breeds with a heavy, oily coat or water-resistant fur tend to be the worst offenders because their skin evolved to produce more of this protective oil.
On top of sebum, dogs naturally host microorganisms on their paw pads, in their ears, and around their rear end. The bacteria living on paw pads are responsible for that corn-chip or Frito smell many owners notice. Healthy ears carry a slightly yeasty scent from the organisms living in ear wax. Anal glands produce a strong musty secretion that varies from thin and yellowish to thick and gray. All dogs have these odors to some degree, but certain breeds amplify them through their anatomy.
The Smelliest Breeds and What Makes Them Rank
Basset Hounds
Basset Hounds are arguably the smelliest breed overall. They have an inherited tendency toward excess sebum production (a condition called primary seborrhea), which gives their coat a persistently oily, musky quality. Their extremely long, heavy ears drape over the ear canal and seal in warmth and moisture, creating ideal conditions for yeast overgrowth. Even healthy Basset ears carry a noticeable smell, and infections make it dramatically worse. Add in their loose facial skin, which can trap debris, and you have a breed that smells strong even right after a bath.
Cocker Spaniels
Like Basset Hounds, Cocker Spaniels are genetically predisposed to primary seborrhea. Their thick, feathered coats hold onto the excess oil, and their long, pendulous ears are a textbook setup for chronic ear infections. Yeast infections in the ears are especially common in this breed, producing a smell that can range from mildly yeasty to something closer to sewage when an infection takes hold. Cockers also tend toward skin allergies, which trigger additional sweating and bacterial skin infections that compound the odor.
Bulldogs (English and French)
Bulldogs smell strong for a different reason: skin folds. Their flat faces and wrinkled bodies create deep creases where air can’t circulate. Reduced airflow means higher temperature, more humidity, and accumulated debris inside those folds. This environment promotes overgrowth of bacteria and yeast that are normally present in small numbers on the skin, leading to inflammation, infection, and a persistent sour or musty smell. English Bulldogs, Pugs, Boxers, and Shar Peis are all predisposed to these fold infections. Bulldogs are also prone to superficial bacterial skin infections involving a specific type of staph bacteria, which adds another layer of odor.
Bloodhounds
Bloodhounds combine nearly every odor-producing trait. They have oily coats designed for weather resistance, enormous droopy ears, and loose, folding skin around the face and neck. Their heavy jowls also trap saliva, which can cause the surrounding skin to become infected and smelly. The sheer surface area of loose skin on a Bloodhound means more places for bacteria to thrive.
Shar Peis
The Shar Pei’s signature deep wrinkles are the primary culprit. Every fold is a potential site for bacterial or yeast infection, and this breed is specifically identified as predisposed to superficial bacterial folliculitis. Their ears are small but unusually narrow in the canal, which also traps moisture. Many Shar Pei owners describe a persistent musty smell that requires consistent maintenance to control.
Saint Bernards and Newfoundlands
Large, thick-coated breeds like Saint Bernards and Newfoundlands produce heavy sebum to maintain their dense, water-resistant fur. Their size means more skin surface area generating oil, and their coats take a long time to dry fully after getting wet. A damp double coat is essentially a warm, moist incubator for the microorganisms that produce odor. Saint Bernards also drool heavily, and the moisture around their mouth and chest can develop a sour smell.
Anal Gland Odor: The Fishy Smell
If you’re noticing a sharp, fishy smell rather than a general muskiness, the source is likely your dog’s anal glands. These two small sacs sit on either side of the anus and release a brown, pungent fluid that normally empties during bowel movements. When the glands don’t empty properly, they become overly full, impacted, or infected, and the smell becomes impossible to ignore.
Signs that anal glands are the problem include scooting (dragging the rear on the ground multiple times a day), excessive licking around the anus, redness and swelling near the rear, and straining during bowel movements. Small breeds tend to have more anal gland issues than large breeds simply because their narrower anatomy makes natural expression less reliable. Left untreated, impacted glands can abscess and rupture, creating an open wound. If the fishy smell is persistent, the glands likely need to be manually expressed by a groomer or veterinarian.
Normal Smell Versus a Health Problem
Every breed on this list will carry some natural odor even when perfectly healthy. The key is noticing when the smell changes or intensifies. A sudden shift from “normal doggy smell” to something sharply unpleasant usually points to one of a few medical issues.
Ear infections produce a smell that goes from mildly yeasty to foul or sewage-like. If you notice your dog shaking their head, scratching at their ears, or if the ear canal looks red and has dark discharge, infection is likely. Skin allergies cause increased sweating and secondary bacterial or yeast infections that give off a musty, heavy odor. Dogs with allergies often scratch constantly, develop hot spots, or lose hair in patches.
Dental disease is another common and overlooked source. Tartar buildup harbors bacteria that cause bad breath, and advanced dental problems can lead to excessive drooling that makes the skin around the mouth smell. If your dog’s breath has become notably worse, it’s worth having their teeth checked. In rare cases, a sweet or ammonia-like smell from the mouth or skin can indicate more serious internal issues like diabetes or kidney problems, which warrant prompt veterinary attention.
Managing Odor in Smelly Breeds
You won’t eliminate the natural scent of an oily-coated breed entirely, but regular grooming makes a significant difference. Dogs with skin allergies or conditions like seborrhea often benefit from bathing once or twice a week with a gentle, hypoallergenic shampoo or a medicated formula recommended by a vet. For most smelly breeds without active skin conditions, bathing every two to three weeks and brushing several times a week helps distribute oils and remove the dead skin and debris that feed odor-producing bacteria.
Skin folds need their own attention. For Bulldogs, Pugs, and Shar Peis, wiping between folds daily with a damp cloth or a veterinary-approved wipe removes the trapped moisture and debris before bacteria can take over. Ears should be checked and gently cleaned weekly, especially in breeds with long or heavy ear flaps. Keeping the hair around the ear canal trimmed improves airflow.
Diet also plays a role that many owners underestimate. Dogs with food sensitivities often develop skin inflammation that worsens odor. A high-quality diet with adequate omega fatty acids supports healthier skin and can reduce excess oil production over time. If your dog smells significantly worse than others of the same breed despite consistent grooming, an underlying allergy or skin condition is likely driving it.
Breeds That Barely Smell at All
On the opposite end of the spectrum, several breeds are known for producing very little natural odor. Poodles (standard, miniature, and toy) have a single-layer, non-shedding coat that produces minimal dander and oil. Basenjis, sometimes called the “barkless dog,” are famously fastidious self-groomers with very low sebum output. Bichon Frises, Maltese, and Whippets are also consistently cited as low-odor breeds. Hairless breeds like the Chinese Crested and Xoloitzcuintli lack the fur that traps oil and bacteria, though they do need weekly baths to prevent clogged pores and skin irritation.
If minimal dog smell is a priority for you, breeds with single-layer, non-shedding coats and upright ears will generally be the least offensive. The combination of low oil production, good ear ventilation, and minimal skin folding keeps odor-producing bacteria to a minimum.