One of Britain’s oldest indigenous breeds, the Bulldog is known as the National dog of Great Britain and is associated throughout the world with British determination and the legendary John Bull. The Bulldog was first classified as such in the 1630s, though there is earlier mention of similar types referred to as bandogs, a term reserved today for a type of fighting dog.
National kennel clubs and breed clubs (see, e.g. Breeding/Health Strategy Documents, below)
Population-level statistics (see, e.g., Swedish Insurance Data, below)
Breed club surveys
There are numerous breed standards.
The basis of breed/conformation shows is the judging of pedigree dogs against the 'Breed Standard', which is a picture in words that describes the range of features that are deemed appropriate for the breed.
Article: SKK: offers information/explanation of processes and considerations in developing a breed-specific health strategy: "In 2013, the Swedish Kennel Club (SKK) launched a project with the aim of improving the health of English bulldogs in Sweden...".
Finland: English Bulldog Breeding Strategy (Finnish)
"The Breed Council is comprised today of 19 Bulldog Clubs in the United Kingdom and Northern Ireland registered with the Kennel Club. The Objectives of the Breed Council is to promote the Bulldog of the true type and liaise with the Kennel Club on all aspects of the health and well being of the breed."
Health information includes Health Surveys , eyes, Bulldog Breed Council Revised Health & Conformation Scheme, breeding advise and more...
The Kennel Club list of DNA tests available for each breed along with an indication as to whether the test is part of the Assured Breeder Scheme (recommended or required) and whether it is recorded on the Kennel Club registration database.
Britain's most iconic dog is in crisis. Comedian, actress and dog lover Catherine Tate investigates the serious health problems affecting the British bulldog and what can be done to save it. ... BBC One except Scotland, Scotland HD.
Other Breed-Specific Webpages:
Research of Cystinuria in Bulldogs Looks for Genetic Cause