grunts or during submission after aggression. Kanos Crouch and Present in agonistic interaction for bonobo. See video. crouch-present See present with limbs flexed. crowd Many chimpanzees gather to peer at individual or gaze at object. Occurs when chimpanzee tries to extract thorn from foot, inspects seriously injured skin, carries newly-dead baby, possesses prized food such as meat, or an unusual object in environment that stimulates curiosity. When crowded, chimpanzees appear to allow closer contact with each other than usual. No adult bonobos crowd. See video. crush Press small arthropod such as louse between finger-tips. Absent in bonobos. 8. See video. crutch Goodall: A method of progressing, usually when the chimp is going downhill, during which the arms are used as crutches. With both hands on the ground, the