accident from higher level to lower level. Cf. drop self and leap down. See video. fall over backward Topple backward from seated position, arms extended. Thud caused by hitting dry leaves; sometimes after being pushed. Signals play solicitation as attention getter. Weanling uses to attract mothers attention. Cf. somersault, backwards and headstand. 5. See video. family Chimpanzee family consists of mother and her immature offspring and adult sons. If daughters do not emigrate, it may become group of three or more generations. See Fig. 15. Fig. 15 Family: Old adult female, Wabunengwa, and her adolescent daughter and infant son 75 7 fish fantasy play See play, imaginary. farsightedness See presbyopia. fart Break wind. See video. F fashion Behavior learned socially, shared by at least most members of at