From your thread title I thought you were the one doing the killing ..................
Maybe a wabbit or squirrel.
Your chav was in a hurry. Did you not hear him approach and look behind?
Strange you should say that. I was nearly killed by a squirrel once.
Squirrels have a 'mode of defence' whereby they break off a twig and throw it at predators. Then run off.
I was cycling along when a small twig hit the front of my helmet. It shocked the shoot out of me so much, I almost wobbled into the ditch. I made an emergency stop before my front wheel went into the water. I looked round and saw a squirrel 'legging it' up the overhanging tree.
It was a damned good job I was wearing my helmet, otherwise I'd have been knocked unconscious.