I've used a dog father to chop a nail & cut a hole through an exterior door.

I've also used a Dumpster Mutt to cut a tire off of a rim, cut a hole in a truck oil pan & in the gas tank. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />

then I finished up by using a sheet of steel as a knife throwing target... <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />