gotta love my Jack
yup, he is an all around great hunter dog, he hunts squirrels, and now woodchucks, nearly killed my neighbors >50lb black lab when it cornered my dog in our garage. weighs 10 lb, but thinks he is 200lb's.
A few days ago he cornered a woodchuck in my neighbors lilac bushes, it must have weighed >10 lb's, so I grabbed my trusty 10/22 and since my area has had some problems with rabid raccoons and skunks, I just put the full clip (10 rounds) into him. Remington golden bullets (34 or 36 grain, 1,300FPS) from 10 feet, all shot from behind into his upper back/shoulder, and not one exited him! He immediately dragged it out, and started biting it and yelping like it was hurting him, but it wasn't even moving. Much to my surprise he started biting it in the back legs, body, and head and just broke every bone in its body in a few minutes. Boy I have never seen him any more proud than after he "killed" that woodchuck.
last night the woodchuck I was going to shoot came out, so I let the dog out, and much to my surprise ran the 30 yards, and almost caught the woodchuck! wouldn't have stood a chance against a 20lb woodchuck, but it sure was funny!