I fear walking into a banana spider web with the spider on my face! It has happened a few times (I think I live where they originated!) Other than that, the only things I fear while hunting are the things that I don't see. If I see a 20 ft diamondback before I stumble on it, I'm not worried. If I see a mountain lion (and have the means to survive an attack, IE my Bowie knife or a gun), I may get an adrenaline rush, but I'm not really afraid......okay, I lied. I'd probably piss a little. But I'd gut him like a fish if I had to!
There are not many bears around here other than small black bears that are rarely seen. Bobcats- I can put them. Coyotes around here are small also. Nothing my bowie knife can't handle. Basically, I may get bitten up by the things around me, but I'd win those battles!