Well I would say it has something to do with him not being a athlete . I to run loose dogs and use a jack Russell that weighs about17 lbs to catch 75% of all my hogs. The,next in line for my catchdog weighs 38 lbs. Its not in the weight I look for but in the style. Thats jmo.
Lol @ this.... Come hunt and see if your athletic jack russell will hold a 300lb boar with one semi gritty cur.