Does your French bulldog sometimes make too much noise when breathing , snore incessantly and is generally very loud? That's because your French bulldog to a greater or lesser extent suffers from brachycephalic syndrome , which manifests itself through breathing difficulties in dogs due to the fact that their cranial formation distorts the pharynx. This syndrome specifically affects the breed of flat-nosed dogs or brachycephalic breeds such as the French bulldog, the English bulldog, the pug, etc.