Fluffy French Bulldog: genetics, coat care and what to ask a breeder

The genetics of the long coat

The long coat comes from a recessive variant in the FGF5 gene, usually written as the L locus. A dog needs two copies (l/l) to grow the fluffy coat. A dog with one copy (L/l) has a normal short coat but can pass the gene on.

That means both parents of a fluffy puppy must carry at least one copy. Two fluffy parents give an all-fluffy litter, while two short-coated carriers give, on average, about one fluffy puppy in four. The genotype is confirmed by DNA, so a breeder should be able to show the result for both parents.

The long-coat gene is independent of colour, so fluffy can be combined with any colour: lilac, blue, isabella, merle and so on. See our fluffy colour page for the variants we document.

What the coat looks and feels like

A fluffy French Bulldog has a soft, medium-length coat rather than a long, flowing one. It is longest on the ears, chest, the back of the legs and the tail area, with a softer, wavier look along the body. The face usually stays fairly short-haired.

Puppies often look only slightly plush in the first weeks. The full coat develops over the first year, so a young fluffy can look very different from its adult self.

Coat care routine

The coat is not demanding, but it does need more care than a short-coated Frenchie:

• Brush two or three times a week with a soft slicker brush and a comb, more often during seasonal shedding.
• Check behind the ears, the armpits and the hindquarters for small tangles before they become mats.
• Look inside the ears weekly. The longer hair on the ear flaps can hold moisture and dirt.
• Bath only when needed, with a mild dog shampoo, and dry thoroughly, especially skin folds.
• Keep the hair around the paws and the rear tidy for hygiene. No full clip is needed.

Shedding and allergies: the honest answer

A fluffy French Bulldog is not hypoallergenic. It sheds, like every French Bulldog, and allergens come mainly from skin, saliva and dander rather than hair length alone. Some owners find that loose hair is caught in the coat until brushing, but that is not the same as being allergy friendly.

If someone in your home has a dog allergy, spend time with an adult dog before deciding, and talk to your doctor.

Temperament and health

Coat length does not change the dog inside. A fluffy is affectionate, calm and people-oriented, like any well-bred French Bulldog.

The health considerations are also the same: breathing, spine, eyes and heat tolerance. A thicker coat can make warm days a little harder, so be extra careful in summer, as described in our guide to heat. Parents should be DNA-tested and breathing assessed exactly as for a short-coated dog. Our Health page lists what we test.

Fluffy and the breed standard

The FCI breed standard describes a short coat, so a long coat falls outside it, and fluffy dogs are not shown at FCI shows. Registration of rare coats and colours varies between registries; our page on pedigree and registries explains the options.

Fluffy should not be confused with the floodle, which adds furnishings and a curly coat gene on top of the long coat and sits further from the traditional breed.

What to ask a breeder

1. Can I see the L locus (FGF5) result for both parents?
2. What are the parents' full DNA panel and breathing results?
3. What colour genetics does the litter carry?
4. Can I see the parents, and an adult fluffy if possible, on video?
5. How do you recommend caring for the coat in the first year?

A breeder who answers these openly, and shares the documents before you reserve, is a good sign.