having kept all sorts of dogs i am of the belief that a good dog gives you sport and feeds me,my family,the landowner and itself i personally dont see the need to endanger your dog running fox especially as you cant eat it ido however understand the need to keep their numbers down but in a more humane way for both fox and especially my dogs as i dont want them ripped up when you have enough problems avoiding barb wire etc and vet fees can be expensive