I know people who have used them on groundhog, raccoon, fox, badger, possum, wild hogs, bobcats, coyotes, pheasant, grouse, rabbit, rats, etc. The list is as long as you want. Use it on whatever you like and you will find out the results. I know of somebody who has treed black bear with russells, but not intentionally. They will either be into it, or not. The limit.......why would there be a limit?
Nate