community. Multi-male, multi-female group with group size of up to 150, occupying territory 10200 km2 in area. Adult females outnumber adult males. Shows fission and fusion grouping pattern. Females emigrate from natal unit group at age of about 11 years. Inter-group relationships are antagonistic. Unit group also main reproductive unit and extra-group paternity is rare at Gombe, Ta and Mahale. Bonobos have unit group of similar size, composition and male philopatry, but inter-group relations are peaceful and even fusion of two groups is indicated. See Fig. 37. uproot See pull out. upside-down suspension See hang upside-down by feet and hang upside-down by hands. urinate Excrete urine. See video. U urinate, prone Lies on belly and excretes urine. 8. See video. See also video defecate, prone. urinate quadrupedal Female