matey you say the ped means f**k all. your so very wrong, the ped and breeding of both the bull, aswell as the original greyhound used was the best of the best- in the breeding of the best bull lurchers. then you forget about crossing bull with grey, as you can breed best to best bull crosses, test em hard and cull the shite. this is how we made lines of game lurchers that make light work out of heavy jobs.
that is the problem, people breed off bulls that have not been thoroughly tested and bred off tested lines, same as using retired track greyhounds given away for nowt as brood bitches d