I ran over a dog once. It charged at me in a corner, went under the
rear wheel, and then yelped as it ran back from whence it came. It was
about mile 60 of a 96 mile bike marathon raising moolah for cancer or
something.

I was around 13 and riding a Ross 10 speed, and so the combination of
youthfull skill and quickness, combined with a heavy steel wheeled
bike, ensured that I stayed on course.