I have been commuting part time year around for 3.5 years now, somewhere around 9000+ miles in total. Today I had a first. I was riding home, in the dark on a MUP and out from no where came an opossum. It must have seen me because it approached the edge of the MUP then began to turn around. Before I could react, it ran in front of me and I nailed it! Fortunately, I didn't wreck! I didn't stop to see if it was OK or not, so who knows what happened to it...