Pit bull
Dog
Pit bull is an umbrella term for several types of dog believed to have descended from bull and terriers. Wikipedia
Lifespan: American Pit Bull Terrier: 8 – 15 years, Staffordshire Bull Terrier: 12 – 14 years, and American Staffordshire Terrier: 12 – 16 years
Height: American Pit Bull Terrier: 18 – 21 in., Staffordshire Bull Terrier: 14 – 16 in., and American Staffordshire Terrier: 18 – 19 in.
Mass: American Pit Bull Terrier: 35 – 60 lbs and Staffordshire Bull Terrier: 29 – 37 lbs
Representative species