Nope! Never worry about damaging the dog, just worry about the dog's owner damaging you in retaliation! You people are full of it.
There seems to have been quite a bit of imagination involved in creating some of the fairy tales posted in this thread. No doubt inspired by all the video games which have replaced real life experiences for many of the worlds less fortunate souls. If some of you had been given a dog and the responsibility of caring for it instead of a TV, a video game, an I pod or a cell phone, you would have a better grasp of reality. It is amazing how ignorance of the canine world can result in the ignorant spreading such large helpings of bovine waste.