A study just published in Nature revealed a series of behaviors never before detected in chimpanzees.

Apparently, even this species with whom we share much of our genetic heritage has developed what we might call real rites.
The discovery is important because it sheds new light on the birth of similar human manifestations.
Members of the Pan African Program, during a mission in Guinea, have noticed a series of repetitive behaviors of primates in the vicinity of the trunk of a tree-actions not directly related to obtain food or to reaffirm its status-why have positioned a hidden camera on the site.
Take a few minutes to enjoy this ancestral ritual in which various specimens of chimpanzees near the tree mysterious and vent their anger violently throwing a large stone inside the trunk, or pay tribute in a fearful, as the mother who carries her little on the shoulders visible to the minute 1:08.
"In human society, the cairns are often used to highlight natural cavities for accumulating food, signal paths or places that have symbolic meanings or sacred."
We can therefore say that in front of the first evidence of an animal spirituality event or something similar to the scene of the black monolith from 2001: A Space Odyssey?
The final answer does not exist yet.
The fact is that since I've seen the video, every time I'm in front of certain tree trunks, and I can not control myself climbing a strange desire to lash out against the first stone that I happen and then get away by emitting sound verses guttural.

From Vice