【How-to】What are exotic bullies mixed with

Hulk, the giant dog, is believed by some to be a cross between an American bulldog and a American pit bull terrier. Not even fully grown yet at 22 months, Hulk clocked in at 175 pounds. … Headed by Marlon Grennan, Dark Dynasty K9s breeds “protection dogs” for profit, making headlines because of Hulk’s enormous size.