If i wanted a x of that mold, i would go for a Malx whippetxgrey. Plenty of speed, power, guts, and what you need in a dog to catch game Agilty. Ive had big dogs, and they did catch, [bullxs,colliexs,bitzs,] all 70-80lbs, and carnt see GSDx , being any better than the otherxs.?? My 1x collie grey,is 24in 58lb and he is 15 months old. He as had 85 rabbits,3 hares, from 17 nights lamping, not bad for a young dog. Ive had lurchers 25years, and if i learned anything, you dont need a big dog to catch any game .? I had a bitza bitch 25in 55lb, and she was the best catch dog i ever had Size+power