Yes, twice when I was young and naturally stupid, once when I was older and chemically-induced stupid:>Badger
Friend and I were fucking around the woods around age 14, found a burrow in a hole beneath a fallen tree. I was poking a stick into it with my head turned toward my friend and a pissed off ball of fur flew out, growling and hissing. Latched onto my hand and bit/clawed the shit out of me while I was screaming hysterically and trying to yank it off. After maybe two or three seconds, it scrambled back to its burrow and growled some more while I got up (I had fallen somehow) and raced crying back to my house. Fucker was bigger and heavier than I would have thought.>Wild horse
After my family moved to the desert, I found out about some wild (or feral, if you like) horse herds nearby and obviously wanted to see them. I went out one day with a bag of carrots--I was still a dumbass kid--and saw a herd of about 20. I tried calling and coaxing them, but only tossing carrots their way drew them closer. One big mare came up to me and tried to shove her nose into the bag. When I pushed her nose away, she kind of snorted and chomped the fuck out of my wrist/hand. I yelled and jumped back, which startled her enough to let go. After some of the herd ate the rest of the carrots, I waited for them to leave and walked home with a swelling hand and wet plastic bag. >Halibut
More recently I visited San Diego to see an old friend, and he took me fishing out on a bay near his house. As the sun set, we were soaking bait and smoking weed in some beach chairs and I caught a nice halibut (to me anyway, he said it wasn't legal size). He unhooked it and dared me to stick a finger in its mouth, which because I was pretty high seemed like a funny idea. I didn't realize a fish could bite so hard desu, those teeth punctured my skin like nothing and I bled for ~15 minutes.
Good times friends, stay safe out there