Usually I'm just calling coyotes. Occasionally bobcats, bear, cougar or crows. I've had lots of different critters respond. Some game animals/varmint, some not. I did try the foxpro this last early summer on groundhogs. Used the groundhog distress after I had shot quite a few and they were starting to stay down. They started popping up for another go around. Did this a few different times.
Here are some others that have responded. Some game, a lot not.
The usual birds- owls, hawks, eagles, crows, ravens, turkeys, magpies, bluejays, woodpeckers. Also peacocks and ostrichs
Many deer, couple elk, cattle, horses, sheep, donkeys, llamas. Dogs, cats, badgers, cottontail rabbits. Porcupine that I wouldn't really call "responding" as much as evacuating. Farmers, hunters.
No skunks yet.
Animals (and other things) are pretty curious. Like DAA said, you never know what is going to show up.