I've killed a couple of rodents.
Usually through being too
rough with them. Either
just in play, or they would
bite from the play, and that
would send me over.
I hope I've learned something.
But even after I thought that
I did, I broke a hamster (it became
undead) for biting me. I don't
think that I had been playing with
it though - probably just trying
to fight it's instincts.
I was good with birds though.