Humans are not the only primate that curse. Chimps do it to. In project Washoe, chimps being taught sign language internalized taboos around the toilet, with the sign “dirty” representing something shameful. They started using that sign as an admonition or to express anger, like a swear word.
Bonobo mothers shake their heads to say NO when their infants play with their food.
Animals have been shown to plan ahead. This was shown by a chimp who collected rocks to later throw at people when he got annoyed.
There was a chimp, Oliver, who walked upright and had other human characteristics.
Art critics unknowingly believed chimp paintings to be incredible modern art.
Chimps in Senegal “hunt using spears”.