I've been rammed by a raccoon. Fortunately, it just knocked SKS fenders out of whack. But the fenders were designed to be knocked around, so I just plugged them back in place and went on my way (and so dod the raccoon). It was creepy feeling raccoon fur on my ankle.

I ran over part of a squirrel when going slowly (11 mph), but the squirrel appeared to be just fine (and so was I).