You talking about jack russel terriors? If so I understand the use of them being small full of entergy and not afraid of much but never hunted with any to see if I would like the nose on them. I try not to knock any breed of dog unless I have had a BAD outcome with one.every person has there style of hunting for were they live and how they hunt, as long as there is a dog hunting with me and is doing its best I'm enjoying the hunt.