it dont take them long to no that biting down hard is no good how do you stop a dog being hard mouthed if its better ill use that
not been funny mate but surely associating the rabbit fur with barbed wire will put the dog completely off running rabbits if it knows that every time it bites it will hurt its self, i see where ur coming from but personally fink its a bit harsh
it dose sound abit harsh but i have tryed it and it did work but if there is a better and fast way ill try it but its the same as stun collars but there are proven to work because dogs are fast learners