by stamp or rap ground, or rarely by hop quadrupedal on spot. Customary among males at Mahale. Seen also as courtship at Ta. Absent in bonobos of Wamba. See video. Beni Study area of Pan troglodytes schweinfurthii in eastern province of DRC. Research done by A. Kortlandt in 19 0, 19 3 and 19 4. bipedal hunch See hunch bipedal. bipedal jump See leap bipedal and hop bipedal on spot. bipedal run See run bipedal. bipedal sex dance See dance bipedal. bipedal swagger See swagger bipedal. bipedal transport 37 bipedal transport See transport bipedal. bipedal walk See walk bipedal. birth See give birth. bite Use teeth to apply force to object. Includes Goodalls Bite: nipping or cutting into the anatomy of another individual by pressing the teeth on