All English Bulldogs are prone to breathing problems, but the severity of these problems varies from one dog to another. While one Bulldog may be able to breathe well enough to confidently compete in agility, another may struggle to go on a walk around the block without heavy panting. While one breeder may prefer to selectively breed for new and unusual colors in the Bulldog, another may focus on breeding to tackle the problems with the breed. Responsible Bulldog breeders will aim to breed dogs with wider nostrils and overall better breathing ability. As such, puppy buyers have the power to help to turn the tides for Bulldogs. When visiting a Bulldog breeder, always ask what they are doing to improve the health of their breed.