self play. She added that, There is a facial expression connected with play, the play face, a type of locomotion that is seen only in the play context, the play walk, and a vocalization, laughing. Goodall listed as elements of each play type: locomotor play: dangle, gambol, swing, pirouette, and somersault. nest play: make bed, leap, and climb. object play: pick up, throw, rub, rotate fruit, drag, drape, flail, and move. self play: grab, dangle, slap, and tickle. Social play included play bite, push head into ventral, chase, circle, drag, wrestle with fingers, hang-wrestle, kick heel, kick, kick back, pinch, play walk, pull, push, step on, rub, slap, spar, tickle, pull object from opposing sides, wrestle, etc. in addition to most patterns used in lone play. See video.