While I've had a lot of animal encounters, my most memorable was about 4 years ago. It was the summer before my last year of college. I didn't have a good job for the summer and was intent NOT to simply earn minumum wage for a job I didn't like just to pay the bills. So I packed up my bag and decided to head to the nearest wilderness area, which happened to be the Selway/Bitterroot area of Idaho. My plan was to "live off the land" for the summer, taking photos and working on my writing.
Well, about 9 days into my journey something happened that they say never happens. While hiking down the trail about 14 miles from trailhead I was bitten by a rattlesnake. I must have scared the heck out of him for him to get me so well. I was passing a shaded area of the trail by some running water, and felt something grab at me about the ankle area. When I looked back there was a 4 and 1/2 foot greenish black northern pacific rattler coiled in the trail.
To make a long story short, it was over 30 hours before I made it to the emergency room, and by the time I did, when the Dr. took tests, he told me my liver was failing, my kidneys were failing, there was blood in my urine, my blood wasn't coagulating, and my tissues were digesting themselves. It appears that hiking 14 miles pumping a large dose of rattler venom through your body will do a number on you. I was lucky to have made it. Anyway, I was in the hospital for 3 days (it was too late for anitivenom - I just had to ride it out), and bed-ridden for 3 months as my leg turned purple, then black, and then finally began to recover.
NOT A FUN EXPERIENCE. To this day when I see a rattler, the thick smell of ferns, like Irish Spring soap comes to me - that was the smell when I was bitten. Anyway, be careful to avoid this type of encounter!
-Zach
p.s. If you're wondering, I did kill the snake, and I still have the rattle to this day. (ten buttons on it!)