I've spent a lot of time calling all around Glacier National Park, both east and west and grizzlies are a very very real chance every time you get out of the truck, as well as lions.
In the fall, bears are in a hyperfagia state and trying to eat everything. The odds of one barreling in to a caller in September and October are very possible in grizzly country, unlike camping your actually broadcasting a distress sound! I hunt alone regularly but in grizzly country I try to hunt open topography and closer to the truck and I'm always armed with my 10mm G21.
I've called in many lions over the years and I'm not as concerned about them but again I always carry a s8dearm and prison shank. Wolves are pretty much zero threat in the lower 48, I suppose in Antarctica where they haven't eaten in a month would change the dynamics somewhat.
Here where I live and hunt in Kentucky, Indiana and Southern Illinois the biggest dangers is the ever present "Snagletoothed Methmouth". These ever present creatures with hollow eyes, demon possessed with teeth that look like burned down houses can appear at anytime throughout the night, usually traveling in pairs in old junk vehicles with no insurance so be very aware and armed accordingly.....
