Had a whippet a few years back that was red hot on them, he was a big whippet tho stood nearly 22" and built like a brick shithouse, was kc reg tho out of lord of the night to a laguna bitch, very strong dog and was very hard mouthed on all prey, loved a scrap took them single with no problems. also had a bitch who was a lot lighter and smaller who loved em but was nowhere near the size to do em alone without taking punishment, i used to use her on a few fox drives to run any pricked foxs that ran she was clever and always took a neck hold and stood back out of the way till I got to her. great