A Corso is a dominant breed, but less testing than a Rott, though some lines are more "difficult" than others. Looks like one of Roman's first dogs was a straight Sottile special. I like their current dogs, very nice. The type in America is slowly improving. There is a good level of prey and rank in this breed. I must say, our Corso is probably the best at getting along with the pack and loves her "sisters," though she does enjoy very rough play, which is not always appreciated by the other two bitches. opposite sex dogs is the best way for them to get along. Same sex can offer a bit of trouble if you don't socialize them correctly. Our Corso was fine when raised with our cats, though she was one of two here that did like to chase. We had dog wise cats, which would not run. Our Corso does less rank testing than our CO or our Rott. Most of her "mistakes" are her drive getting the best of her, though she is quick to "find herself" again on verbal command. I think your Bully cross would love a Corso girlfriend. Visit the breeder if at all possible.