A dog that you like the look and temperament of, obviously not a 3/4 bull 1/4 grey or something heavy like that but as long as its reasonably quick it will catch rabbits. It's all well and good people suggesting different crosses for you but if their suggest big smooth dogs and you like little rough ones or vice versa you'd never be entirely happy with what you purchase, its you that's gotta look at it and care for it at the end of the day.