The jags are good dogs,but as tough as they are you may want more size for the bigger game,(hogs,bears, lions) Not saying they can't get it done ,just letting you know that you may be stitching ,or burying more dogs than you like.
I like jags,but can't run them because they "have more heart,than brains" They will try to fight any thing,no back up, and no quit,till they hit the tree.Once the game is up some will just leave the tree looking for the next race.Do your research on the dogs,and if they suit your style have fun with them.