Seeing as how the only legal quarry to work are Rats n Rabbits, im quite happy with my whippets performance, as for stamina, im out for several hours per day, and she still wants more, excellent hooter on her, misses nowt, if its there she will put it up, having said that, im gonna contradict myself here, for reasons best kept to myself, my next dog, will be a lurcher, beddy cross or summat, i quite like those 2 pups of geoffs, SOWHAT, that breeding would suit my needs