posture. 3. See video. lift Raise up heavy object by hands. Seen in bonobos. See video. lift and drop Raise up heavy log or thick woody vine by hand, then drop it on ground to make loud, thumping sound. Display by young adolescent males, Primus and Orion, and adult male, Pim, as courtship, mild threat, or solicitation of play. See video. lift rock Adult male lifts rock with hands, then usually throws into water to make noisy splash, apparently heightening effect of charging display. See throw splash. No rocks in habitat of Wamba bonobos. See video. Lilungu Study area of Pan paniscus in Equateur Province of DRC. Research done by Sabater Pi and colleagues from 1988 to 1990. limp Walk lame because of wounded limb. See video. lion