Most or all non-human species can exchange information, but none of them
are known to have a system of communication with a complexity that in any way is
comparable to language. Primarily, they communicate with non-linguistic means
resembling our smiling, laughing, yelling, clenching of fists, and raising of eyebrows.
Chimpanzees, gorillas, and orangutangs can exchange different kinds of information
by emitting different kinds of shrieks, composing their faces in numerous ways, and
moving their hands or arms in different gestures, but they do not have words and
sentences. By moving in certain patters, bees are apparently able to tell their fellow
workers where to find honey, but apparently not very much else. Birds sing different
songs, whose main functions are to defend their territory or to attract a mate.