It loks like a samovar to me, so I voted Chinese tea pot.
Of course, a samovar would have a spigot, but this could just be the backside to make it more difficult.
Do the figures/handles look more Aztec or more Chinese? Hmmm ....
David might be right, and the container to hold the hearts of sacrificial victims would be my second guess. But for the records I stick with Chinese teapot.