Doing it doggie-style is a popular pastime among horny, adventurous couples. Interestingly enough, it does not involve dogs nor does it even remotely veer towards the animal kingdom. If that is what you were thinking of, Get the Hell off this website. We don't want you here! Try your local zoo but don't go near the lions, tigers or bears sanctuaries. They will definitely eat you and not in a good way!
|Édouard-Henri Avril [Public domain], via Wikimedia Commons|