No simple way of predicting breathing difficulties in pugs, French bulldogs and bulldogs from external features

As many as a half of all short-nosed dogs such as pugs, French bulldogs and bulldogs experience breathing difficulties related to their facial structure. However, research published today by the University of Cambridge suggests that there is no way to accurately predict from visible features whether an apparently healthy pug or French bulldog will go on to develop breathing difficulties. Dog breeders should also avoid using dogs with extremely short muzzles, wide faces, and thick necks. Nai-Chieh Liu The findings have implications for attempts to 'breed out' this potentially life-threatening condition. Pugs and bulldogs have become popular breeds in recent years - the French bulldog is set to become the UK's most popular canine, according to the Kennel Club. However, a significant proportion are affected by a condition known as Brachycephalic Obstructive Airway Syndrome (BOAS) related to their head structure. Studies suggest that for over half of such dogs, BOAS may lead to health problems, causing not just snoring but also difficulty exercising and potentially overheating.