Adult bonobos much less often touch each other, mostly done by infants and juveniles. See video. touch fruit Touching hard-shelled fruit important source of information about ripeness. Sometimes, only touching suffices, but may be sniffed and bitten. Type of inspect fruit. Absent in bonobos of Wamba. Category 3. See video. touch scrotum In mounting, mounted male often reaches back to touch genital area of mounter with hand, while screaming loudly. Adult male also touches scrotum of another for reassurance. While pant-grunting to adult male, adult female often reaches to touch scrotum. Kortlandts Caress anothers scrotum, for chimpanzees of Beni. 5. See video. See also video sniff finger. touch with foot Function is similar to touch with hand, but rare. Juvenile extends its leg and clandestinely touches any body-part