The American Bulldog is a large breed of utility dog descended from the now-extinct Old English Bulldog. In November 2019, the American Bulldog was added to the American Kennel Club (AKC) Foundation Stock Service (FSS). American Bulldogs generally live from 10 to 16 years, and tend to be strong, physically active, and often healthy. American Bulldogs generally live from 10 to 16 years, and tend to be strong, physically active, and often healthy. Some health problems in American bulldogs are often found within certain genetic lines, and are not common to the entire breed, while others, such as neuronal ceroid lipofuscinosis (NCL), Ichthyosis, disorders of the kidney and thyroid, ACL tears, hip dysplasia, cherry eye, elbow dysplasia, entropion, ectropion, and bone cancer are more common to the general population of American Bulldogs. There are DNA tests available to help breeders screen breeding animals for NCL (neuronal ceroid lipofuscinosis) and Ichthyosis.