Bulldog: inherited diseases and health

Updated 2026-09-30 · 3 sources

Based on: OMIA (University of Sydney), Science for Animal Welfare (UFAW), Wikidata

Breed health

The inherited conditions below have been documented in this breed in published research. That does not mean your dog has them or will get them – but it helps to know the names when you talk to a breeder or a vet.

Conditions this breed is prone to

Veterinary charities list this breed as more likely than others to get these conditions. Read the signs and what to do:

Bulldog and chocolate: how much is dangerous?

Typical adult weight: 23–25 kg. Grams of chocolate at which signs can start (20 mg/kg) and at which severe signs are reported (40 mg/kg):

Dog weightMilkDark 70–85%Baking / unsweetened
23 kg230 g signs
460 g severe
58 g signs
115 g severe
33 g signs
66 g severe
25 kg250 g signs
500 g severe
62 g signs
125 g severe
36 g signs
71 g severe

Based on published doses: signs from about 20 mg/kg, severe signs from 40 mg/kg (US FDA, Cortinovis & Caloni 2016, Swedish Poison Information Centre). An estimate, not a diagnosis.

Check the exact amount with the chocolate calculator →

Inherited conditions documented in the breed

Conditions documented: 17

A gene variant is known for 5 of the conditions below, so a DNA test may exist. Ask your vet or the breed club.

ConditionBody systemInheritanceGene variant known
Acrochordonous plaque[1]Integument (skin)––
Brachycephalic Airway Obstruction Syndrome (BAOS)[2]–––
Brachycephalic Ocular Syndrome[2]–––
Cerebellar abiotrophy[1]Nervous system––
Craniomandibular osteopathy, generic[1]CraniofacialMultifactorialNo
Cystinuria, type I - A[1]Renal / urinary systemAutosomal recessiveYes
Dermatitis, atopic[1]Integument (skin)MultifactorialNo
Dystocia due to Foetal-Pelvic Disproportion[2]–––
Eyelid gland, third, prolapse of[1]Vision / eye–No
Leg weakness[1]Skeleton (incl. short stature & teeth)––
Multifocal retinopathy 1[1]Vision / eyeAutosomal recessiveYes
Pulmonary valve dysplasia[1]Cardiovascular systemMultifactorialNo
Pulmonic Stenosis[2]–––
Screw tail[1]Limbs / fins / digit / tailAutosomal recessiveYes
Spinal dysraphism[1]Skeleton (incl. short stature & teeth)Autosomal recessiveYes
Urolithiasis[1]Renal / urinary systemAutosomal recessiveYes
XX difference of sexual development, generic[1]Reproductive systemMultifactorialNo

What this list means

  • “Documented in the breed” means at least one published case or study – it says nothing about how common the condition is.
  • Many of these conditions are rare. A responsible breeder can tell you which health tests the parents have had.
  • Where the gene variant is known, a DNA test may exist – ask your vet or the breed club.
  • If your pet shows signs of illness, contact your vet. This page cannot tell you whether your pet is ill.

About the breed

Origin
United Kingdom
Weight
23–25 kg
FCI number
149
[3]
If your pet is struggling to breathe, has collapsed, is having a seizure or can't stand up: go to the nearest vet now.

Not sure how serious it is?

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Sources

  1. OMIA (University of Sydney)
  2. Science for Animal Welfare (UFAW)
  3. Wikidata

How this page was made: the list is taken directly from the sources below; nothing on it was written by AI. Names of conditions may be machine-translated. It is information, not a diagnosis. How we write our pages

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