show display, charging in aggression. Cf. display as contest. S 170 sit prone shrub-bend See bend shrub. shrug Goodall: Mother raises one shoulder slightly and lowers the other. Signals the infant to climb off its dorsal position. Gesture occurs during weaning and is a sign of rejection. Plooijs Shrug. Common at Mahale. See also drop infant. Cf. lower head and shoulder. Absent in bonobos of Wamba. 5. See video. sickness Symptoms of sickness include cough, diarrhea, lethargy, lie, pick ear, pick nose, sneeze, sniffle, vomit, runny nose, unstable walking, etc. See video. silent bared-teeth display See grin. sit Plooij SIT. Goodall: Rump on ground, branch, etc., body more or less vertical. Arms sometimes crossed. Kanos Sit. See videos. sit and lean Sit and extend both arms backwards and