Nothing to do with bovines at all, be they sacred or profane. It's just that all too often the people looking for this sort of thing are the ones who want it to use in the production of kiddy porn, which is against the law, not to mention common decency. That makes it awful hard to sort out legitimate requests; however most of us do try to give everyone the benefit of the doubt. Just a thought: if you'd given us that information in your request, it would have raised fewer eyebrows, not to mention hackles.