I,m working a dog at the moment that is AmBulldog/Bullterrier x Greyhound, very steady around other dog's (we have 3 AmBull's aswell) excellent retriever on any legal quarry, good jumper and has the best feet i,ve ever seen on a lurcher, also quiet as a church mouse in the kennel, all in all one of the best dog's i,ve worked in 20yrs of keeping running dog's.