In this particular battle I'm on the side of the Catholics. I grew up Presbyterian, but that whole predestination thang, among other matters of doctrine, eventually squashed that flat.
And, just where in the Bible does it say that only humans go to heaven?
This actually points to one of the beliefs of Paganism that helped convert me, that all things partake of the Divine and are in their own way sacred. So, yeah, a rock can be sacred.