Lucky for me it was with a Squirrel. The squirrel on the other hand didn't fair to well.
I was going pretty fast down a steep hill and saw a couple of Squirrels playing around on the sidewalk, plenty of distance, it was a side street so I was kinda close to the center line. This thing must have had a suicide wish, it went straight for my front wheel as I went by. No chance to slow down
All I could think about was all of those pictures I've seen of squirrels lodged between the fork, or destroyed wheels and endoed riders. I braced my self for a disaster but I rolled right over it. Turned around to make sure it wasn't suffering, and then continued on my way to work. I'm no fan of squirrels but I did feel bad.