play in dry season at Mahale. 8. See video. ride dorsal Infant approaches, puts hands on mothers buttocks, and climbs up to ride on her back, or occasionally, another individual. Goodall discriminates three infant dorsal positions: Jockey, Lying and Quadrupedal. Kanos Dorsal travel for bonobos. See video. ride jockey Goodall: When an infant sits on the back of another in a straight upright position. Its legs may be drawn up, with the feet on the others back, or gripping around the others side. Kanos Dorsal travel: jockey style for bonobos. See video. ride onto See step on. ride prone Infant travels by lying prone on mothers back. Kanos Dorsal travel: cling style for bonobos. See video. ride quadrupedal Goodall: When an infant stands on the back of another.