Conversation so far:
what type of breed is an american bulldog
The American Bulldog is a large, stocky and powerful working dog breed from the Mastiff family. They have distinctive half-erect pendant-shaped ears and a strong jaw.
what is the american bulldog descended from
The American Bulldog is a large breed of utility dog descended from the now-extinct Old English Bulldog.
how long does american bulldog live
American Bulldogs generally live from 10 to 16 years, and tend to be strong, physically active, and often healthy.
what is the american bulldog used for
American Bulldogs are now used on animal farms, dog sports, and for showing.

Question: what other breeds are in the mastiff family
Self-contained rewrite: what other dog breeds are in the mastiff family besides the american bulldog