may be wolves need tetanus shots.. but who renders them such service? all they do is to kill them by gathering all the dogs from the streets, farms and houses and empowering them with these type of spiked collars. wolves are endangered and these tribals don't care about all those things and they want to threaten the wildlife and put the dog's life to risk and engage in unfruitful practices.. if they hunt for food, it may be less obnoxious.. but why do they hunt wolves? may be they eat wolves.. whatever they may do.. their dogs are really marvelous!