Started calling in 1953 using a Weems Wildcall on grey foxes. Calling game is one of the most exciting things you can do! Haven't done much the last few years. I go out a couple of times each winter trying to call in mountain lion, but so far no success. Oh well, it's exciting anyway.
I have called in raccoons, bobcats, an owl, coyotes, elk (and finally arrowed a 5x5), deer (does seem more prone to coming in to varmint calls), turkeys, red fox, grey fox, farmer's dog, and one cougar I never saw. I heard a noise behind me. Turned to look, but nothing. Got up and found fresh tracks where it came in, then hurried away. All very exciting!
Varmints are easier to call today using e-callers, IMO&E. But I always carry several mouth calls, because they don't need batteries.