Know what you mean Bird and thats why i asked as well,i think it could be lost,watered down to much what ever way you want to put it with a 3/4 bred.Caterpillers dog is a strong dog,not musle bound,but can run on any gorund any where type strength,feet you need some rum old stuff to cut up and mental strength to stay on the ball when the going gets slow but saying that i feel if crossed to a big greyhound to much of it MAY be lost.I know the proof is in the pudding as it were and i may well be wrong hence asking those that know but thats what i think anyway .