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Baboons have a complex system of communication that includes vocalizations, facial expressions, posturing, and gesturing. These vocalizations, which baboons use to express emotions, include grunts, lip-smacking, screams, and alarm calls.The intensity of the emotion is conveyed by repetition of the sounds in association with other forms of communication.hese vocalizations, which baboons use to express emotions, include grunts, lip-smacking, screams, and alarm calls. The intensity of the emotion is conveyed by repetition of the sounds in association with other forms of communication.
Long-distance communication is by means of nerves and circulating hormones; the principal function of many organs, notably the endocrine glands, is to facilitate such communication between organs. Cells communicate with each other by means of an enormous diversity of signalling molecules.These molecules have traditionally been classified according to the distance over which they act. Local communication between neighbouring cells is described as paracrine signalling.ells communicate with each other by means of an enormous diversity of signalling molecules. These molecules have traditionally been classified according to the distance over which they act. Local communication between neighbouring cells is described as paracrine signalling.