some will do the job others wont the same as in all breeds, i had one bullx bitch couple of years back, and was a pain in the ass, kept f*****g off when it suited her, had two foxs then then wouldnt take any thing after that, not even rabbits, but then my partner had a bullx and he was an absolute diamond in every way, he had the heart of a lion, would take any thing, he was obediant, he jumped was stock broken, he was one of them special dogs that you dont get very often, he did every thing that was asked of him.