Do you alone in the world know what animals are thinking?
You provided... passive aggressiveness.
And if animals now engage in religious ritual, doesn't that make them stupid for not being atheist like you? I expect several YouTube videos of you trying to convert your cat into the enlightened ways of post-theism.
You did nothing of the sort. You provided a link to a video of an anthropologist describing chimpanzee behaviour and indulging in a little light speculation about why they're doing what they're doing.
Nobody is claiming that animals believe in god(s), rather I'm disputing your bizarre assertion that you know that they don't. There is no way to tell.