When a chimpanzee bares its teeth in an aggressive threat display, it is signaling dominance, intimidation, or a warning. Unlike a submissive “fear grimace,” this display typically involves an open mouth with exposed teeth, sometimes accompanied by direct eye contact, loud vocalizations, and raised body hair (piloerection) to appear larger. The chimp may also engage in chest-puffing, swaying, or drumming on surfaces to reinforce its threat. This behavior is common among dominant males asserting control or in confrontations where a chimp wants to intimidate a rival or perceived threat.
If the situation escalates, the chimp may charge, throw objects, or even attack. These aggressive displays often occur when defending territory, competing for mates, or asserting social rank within a group. In such cases, backing away slowly and avoiding direct eye contact is crucial to prevent provoking further aggression. Understanding these signals helps in recognizing when a chimpanzee is on edge and ready to assert dominance or defend itself.
I made this in 2018 using a #2 pencil and Adobe Photoshop. I referenced a couple of photos of chimpanzees. What I find funny about this is how women are often expected to smile big for others’ comfort, while in other animals, showing teeth can be seen as a threat.