What size is a full-grown Staffordshire Bull Terrier?

The size of a full-grown Staffordshire Bull Terrier is relatively small, standing less than 16 inches tall and weighing as little as 24 pounds. Despite their size, Staffies have muscles to spare. Compared with the much larger American Staffordshire Terrier, a breed that weighs up to 80 pounds, this compact breed weighs between 24 and 38 pounds.