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.
Many animals can communicate by vibrating the surface of earth, water or other substrates, a phenomenon known as seismic communication. Predators also use this ability to eavesdrop on their prey.
There is a language in Mexico at risk of dying out because the only two people who speak it refuse to speak to each other.