keep saluki's or saluki x greys for what they do best,, in my opinion, if u wanted a digging dog buy a pup that sire and dam have been proven,, if u wanted a rabbiting dog try and keep any type of lurcher under 23" will have a much higher kill ratio, if u wanted to do the reds u dont necceserily need a bull x, but something thats bred frpm proven workers,, so on and so on, crossing a saluki with a bull, what would that bring?????????my opinion nothing,, why would a dog need endless stamina for a fox or pig, or why would the saluki need the bull for daytime?? jmo, shaun