 Therefore, he crossed several Bull Boxers with the American Staffordshire Terrier and noticed that at least in the first generation, the characteristics remained the same.However, no more American Staffordshire Terrier crosses were made in the following generations and soon the studbook was closed in order to continue the breeding solely by using already existing Bull Boxers.The Brazilian Bull Boxer Club was founded in 1986 and its president is Pedro Ribeiro Dantas himself.