teaching, if any, comprises only discouragement or negative reinforcement. Mother or allomother only rarely removes and discards leaf from mouth of infant, if leaf is not in diet of group. No systematic teaching. Teaching absent in bonobos of Wamba. 9. tear Remove leaf from branch or stalk with hand. Common method of harvesting foliage. See video. tease Dominant provokes subordinate by mild threats, such as throwing branch or fishing, without recourse to violence. Different from Adangs Tease, which is similar to harass. At Mahale, adolescent female with monkey tail tried to fish for juvenile male: She carried colobus tail up tree and dangled it from above. Whenever male jumped for it, she withdrew it, so that he could not reach it. After several attempts, male got tail, and