not all the time if you start a dog to early they will probly go to the neck of the stuff were they cant get nipped then av seen dogs try kill it from were they lift in each dog is different they have to find there own way of dealing with it but thats a pups first fox single handed only tine will tell with him my own dog will kill a fox by the chest or he crush there heads just depends on himiv never seen one single dog crush a fox's head personal,, not saying you'rs doesn't but never seen it done.. seeing is beleaving hard to beleave unless you see it but there a few lads would of