stick. Cf. tool composite. 3. See videos. tool use See use tool. touch van Hooff Touch. Plooji TOU. Nishida Touch. Goodall: A chimpanzee reaches out with a hand and touches another, with fingers, by laying the whole palmar surface of the hand on the others body Touch signals reassurance to subordinate from dominant, and appeasement to dominant from subordinate. Mother touches infant to signal departure. At Mahale, estrous females approach and touch males on shoulder, etc., to solicit copulation. To touch head of another sometimes signals to groomee by groomer to change posture. Parts frequently touched are mouth, chin, head, hand, shoulder, and genitals. Mouth most often touched by adult male, Kalunde, to appease alpha male, Fanana. See also push finger into mouth, groom, inspect, pat and push.