i once killed a frog with mine and didn't realize it till a few days after the fact when i started smelling something funny and happened to see it lodged in my front bumper. it ended up falling out somehow a day or two after that. i've also killed a possum; or at least maimed it. i may have also gotten a bird with it once but the bird could've already been dead when i hit it cause it was just standing in the road as i went over it and just tipped over when i passed.