93 branches, or extended to the playmate below in social play. Also in bonobos. See video. hang upside-down by feet Hang by feet from branch. Rare in infant and juvenile social and solo play and play invitation. Kanos Upside-down suspension for bonobos. See video. hang upside-down by hands Grip branch with hands, flex legs and hang upside down. Infants and juveniles in social and solo play and play invitation. 3. See video. See also video play with object. hang with legs pitterpat Hang from horizontal branch and shake legs up and down, e.g., in response to play partner on ground who tries to grasp leg of suspended individual, or to solicit play from partner on ground. See video. hang-wrestle Two arboreal chimpanzees hang by one hand, and each