It may not be dog agression (DA), it could be dominace. Does the dog only jump on dogs of the same gender or both genders? Does the dog try and pin the other down or does he try to kill it? Lots of times when you get the dogs out enough they'll learn what they are out there for and stop doing that stuff on hunts. Around the house you may have to keep them seprate tho. What breed of dog is it?
Good point, especially in the box b/c they cant get away from the dominant gesture therfore fight occurs. electricity timed right will fix alot of problems, especially a cattle prod. I put a muzzle on my fussy one and it took a few months but helped alot, he is only agressive in a dog box/truck though.
