is more laughter Chimpanzees rarely emit play-pant during solo play. In social play, tickled or chased chimpanzee emits most play-pants. Bonobos also play-pant. See video. See also video hang with legs pitterpat. play, parallel Two or more infants play simultaneously in vicinity, but without interacting with one another. See video. play, rough and tumble Most physical type of play, usually between youngsters. Paquettes Rough play. Wrestling and often locomotor play. Elements include chase, run, climb, leap, grab, tag, wrestle, push, pull, mouth, play bite, drag, stamp, slap, thrust, play-pant, scream, play face, grin, etc. See video. P 138 play with sand play self See play solo. play socially Goodall Social play. Play with conspecific. Usually in twos, but sometimes in 35. See also play. See video. play socially