I'm sure this silverback gorilla is just yawning. But you've got to give respect to a beast that is seven times your strength, with fangs that large, and with a jaw that can open that wide. Couple all that with the fact that that green stain on his upper lip just above his middle teeth is residue from some poo he was eating earlier, and you've got a beast with both the means and the lack of propriety needed to rend you apart.
Photo source: Hauke Steinberg
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