ウェブ1 日前 · They range in size from Margot Marsh's mouse lemur, at 8 cm (3 in) plus a 11 cm (4 in) tail, to the eastern gorilla, at 196 cm (77 in), not including limbs. Primates are also the most intelligent animals and non-human primates are recorded to use tools , communicate with gestures and vocalizations, and have complex social systems .