American Bulldog

The American Bulldog is a breed of working dog. The names associated with the Bully and Standard types are those of the breeders who were influential in developing them, John D. Johnson (Bully) and Alan Scott (Standard).

Weight	Male	32–54 kg (70–120 lbs) Bully type (85–130 lbs) 39-59kg
	Female	(60–90) lbs 27-41 kg
Height	Male	50–71 cm (20–28 in)
	Female	20–24 in
Coat	Short, harsh
Color	All white or white with patches of red or varying degrees of brown, brindle, or fawn.
Litter size	7–14 puppies
Life span	10–15 years

source : wikipedia