Referring to the original question. Any whippet will work to a certain degree, but when it comes down to using a whippet for substantial work, you want a animal with good bone, feet, jaw, brains, prey drive and stamina, and not to forget good skin. Most show bred/racing stock will not inherit a lot of these qualitys, its just speed for racing and confirmation for the show bred dog. Your best bet is the coursing lines, or mb lines being purposely bred to sustain the knocks and bounds of a working dogs life, so is less prone to injury. Theres a big difference in a dog that works, to a dog thats