dorsal, put ventral, scoop infant, solicit riding, solicit companion, and grasp and push shoulders. Cf. go ahead. See video. dermatophytosis Infections skin disease on face of chimpanzee. See video. D 54 dig descend Climb down from elevated site: Includes six patterns: descend by brachiation, descend tree trunk feet first, descend tree trunk head first, leap down, slide down vertically and descend orthograde feet first. Cf. fall. See video. D descend by brachiating While progressing by brachiation, supportive bough gradually bends down until ground can be reached with feet. Also in bonobos. See video. descend orthograde feet first Grasp branch below with feet to move to another tree below. See video. descend tree trunk feet first Climb down backwards. Seen in bonobos. See videos. descend tree trunk head first