Squished faces aren’t the only cause of bulldog breathing difficulties

French bulldog

French bulldogs can have breathing problems

Michelle Guillermin/EyeEm/Getty

Many English and French bulldogs develop breathing difficulties, and the flat faces of these breeds have long been thought to be responsible, but now a gene mutation in these dogs suggests that face shape isn’t the only culprit.

Jeffrey Schoenebeck at the University of Edinburgh, UK, and his colleagues have found a mutation in a gene called ADAMTS3, which is also present in Norwich terriers.

Norwich terriers often suffer from similar breathing problems even though they have proportional noses.

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