leg raise arm slowly raise arm to hold branch raise arm with elbow bent raise leg while lying raise others arm raise others chin raise others leg scratch dry leaves scratch self signalling sit and turn back sit behind individual sit face to face sit sideways solicit grooming solicit grooming turn stare fixedly with head down and bottom up touch turn face upward turn up lip 1-5. Social/solo play and play invitation backstroke balance beat sole with palm bend shrub bite and pull hairs bounce foot/feet up and down rhythmically chase circle orthograde circle orthograde off ground circle quadrupedal club other collect dry leaves contact watercover self drag and circle drag by hand drag by mouth drag dry leaves drag other by hand drag other by mouth drape