French Bulldog vs Pug: Which Should You Choose?

French Bulldogs and Pugs are two of the most popular flat-faced companion breeds, and they have a lot in common: small size, short coats, an affectionate nature and a similar list of health problems. The differences are smaller than between a Frenchie and an English Bulldog, but they are real, and a couple of them matter more than they first appear.

At a glance

	French Bulldog	Pug
Weight (breed standard)	Not over 28 pounds	14 to 18 pounds
Coat	Short, smooth	Fine, smooth, soft, short
Standard colors	Brindle, fawn, white and combinations	Fawn or black
Tail	Straight or screwed, short	Curled tightly over the hip
Heatstroke odds vs a Labrador	6.49 times	3.24 times
Median lifespan (UK)	9.8 years	11.6 years

Sources: the French Bulldog and Pug breed standards, Hall and colleagues, 2020, and McMillan and colleagues, 2024.

Origins

The French Bulldog descends from small English bulldogs taken to France in the 1800s and developed there as a companion. The Pug is far older: the AKC describes it as a companion of Chinese emperors, later adopted as the mascot of the Dutch royal House of Orange (AKC). Both have been bred as companions for a long time, and it shows.

Size

A Pug is the smaller dog. The Pug standard asks for 14 to 18 pounds; a French Bulldog can weigh up to 28. In practice a Frenchie is noticeably heavier and more solidly built, though both are easy to pick up.

Coat and color

Both have short coats and both shed year-round, so neither is a good choice if you want a dog that leaves little hair behind. Weekly brushing helps with both. Our shedding guide covers what’s normal for a Frenchie.

Color is where the two standards differ most. The Pug standard recognizes only fawn and black, and a fawn Pug has a black mask and ears. The French Bulldog standard allows brindle, fawn, white and combinations of these. Many colors sold as “rare” French Bulldogs, including blue, lilac and merle, are disqualifications under the standard, as our colors guide explains.

Both breeds have wrinkles, and both are prone to skin fold infections. Clean the folds a few times a week with a pet grooming wipe and dry them properly.

Tails

Neither breed is docked. A French Bulldog’s tail is short and either straight or “screwed”. The screw tail is linked to a variant in a gene called DVL2, which is also associated with malformed vertebrae further up the spine (Mansour and colleagues, 2018). It wasn’t bred in to protect the tail from injury, as is sometimes claimed.

A Pug’s tail is different: the standard asks for it to be “curled as tightly as possible over the hip”, with a double curl considered ideal. If your Pug’s tail suddenly hangs straight, it’s worth a vet check, since pain can be the cause.

Temperament

Both breeds are sociable, affectionate and happiest near their people. Pugs are often described as busier and more mischievous; Frenchies are often quieter indoors but can be clownish in bursts. Individual dogs vary more than the breed reputations suggest, so meet the parents if you can.

Health

Both breeds have health problems driven by their body shape, and the UK’s VetCompass studies give a direct comparison. Pugs had nearly twice the odds of other dogs of having at least one disorder recorded in a year, and higher odds for 23 of 40 common disorders. Their risk of BOAS was almost 54 times that of other dogs, and the researchers concluded that the Pug “can no longer be considered as a typical dog from a health perspective” (O’Neill and colleagues, 2022). French Bulldogs had higher odds for 20 of 43 disorders, led by narrow nostrils, BOAS, ear discharge and skin fold infections (O’Neill and colleagues, 2021).

Shared problems

Breathing. Both breeds have narrow nostrils and a long soft palate, which make breathing hard work, especially in heat or excitement. Keep your dog lean, avoid heat, and see your vet if breathing is noisy at rest. Surgery helps many dogs with moderate or severe BOAS.

Heat. Both overheat easily, though in the UK heatstroke study the French Bulldog’s risk was twice the Pug’s: 6.49 against 3.24 times the odds of a Labrador (Hall and colleagues, 2020). Neither breed should be walked in the heat of the day.

Skin folds. Both need their folds cleaned and dried regularly to prevent infection.

Kneecaps. A kneecap that slips out of place is common in both. Mild cases may only cause an occasional skip in the step; severe ones may need surgery.

Seizures. Both breeds can have seizures. Move furniture away, don’t put your hands near the mouth, and time it. A seizure lasting more than five minutes, or several in a row, is an emergency. Our health issues guide covers what to do.

A Pug-specific risk

Pugs are the breed most affected by necrotizing meningoencephalitis, often called Pug dog encephalitis. It affects roughly 1% to 2% of Pugs, usually appears between one and a half and two and a half years of age, and brings on seizures, circling, vision loss and behavior changes quickly. The outlook is poor once signs appear (Windsor and colleagues, 2022). A genetic risk test exists; ask a Pug breeder whether they use it.

Pugs’ large, prominent eyes are also more easily injured, so eye redness, squinting or cloudiness needs a vet promptly.

Care

Grooming

Both are simple to groom: weekly brushing, fold cleaning, nails and ears, and a bath when they need one. Our bathing guide covers how often and how to keep water out of the ears.

Exercise

Neither breed needs much exercise, and both need some to stay lean. A couple of short walks in the cool part of the day plus indoor play is right for both. Our guide to walking a French Bulldog applies to Pugs too, and our toy guide has ideas for indoor play.

Training

Both breeds learn best with short, reward-based sessions. Both are food-motivated, which helps, and both gain weight easily, so use tiny treats and count them. Our guide to French Bulldog stubbornness covers what to do when a dog seems to stop listening.

Living space

Both suit apartments and small homes, provided the home stays cool in summer and warm in winter. Neither needs a yard.

Lifespan

In the largest UK study of breed longevity, Pugs had a median lifespan of 11.6 years and French Bulldogs 9.8 years, both below the average for dogs overall (McMillan and colleagues, 2024). Keeping either breed lean, cool and under regular veterinary care gives them the best chance of beating those numbers.

Cost

Both breeds are expensive to buy, and both cost more than average to keep because of their health problems. Our French Bulldog price guide covers advertised prices, rescue fees and the ongoing costs, and much of it applies to Pugs too. Arrange pet insurance before problems appear. Rescue is a good route for either breed; both turn up there often.

Which should you choose?

If you want the smaller dog, a longer expected lifespan, and a dog that copes slightly better with warmth, the Pug has the edge. If you prefer a sturdier dog and a quieter presence indoors, a French Bulldog may suit you better.

The more important choice is the breeder. For either breed, look for moderate features rather than extreme ones, ask about BOAS grading and health testing, and watch how the parents breathe at rest. For a Pug, ask about the encephalitis risk test too.