That sounds like the squirrel I almost got the other week. I was coming home from work on a nice twisty road when a squirrel ran out. I wasn't trying to hit it but wasn't going to crash avoiding it.
It ran from the right side of the road and I left my left boot toe hit it's tail. It continued on it's way to the other side of the road.
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I've hit numerous birds ( I really like my armored gear ) and some really nasty bugs. I remember one time I had just flipped down my visor when I hit a bigass bug that splattered all over my visor.
When I was young, dumb and "squidly", I was riding in a loose fitting tank top. I was doing about 70 mph when I rear ended a wasp in my left nipple. To say that hurt would be a gross understatement.
I locked up both tires and ripped what was left of the backend of the wasp out. I had a hollow spot there for a month.