Journal
FOLIA PRIMATOLOGICA
Volume 78, Issue 4, Pages 240-244Publisher
KARGER
DOI: 10.1159/000102319
Keywords
chimpanzee; handedness; laterality; drinking technology; artefact
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We present the first indirect test of manually lateralized behaviour in non-human primates, based on wells dug for drinking water by wild chimpanzees (Pan troglodytes schweinfurthii). Apes at Toro-Semliki Wildlife Reserve, in Uganda, dig bimanually in sandy riverbeds, leaving behind paired piles of excavated sand. The volumes of left- versus right-side piles do not differ, suggesting a lack of behavioural laterality, but this needs to be verified by further, direct observational data. Copyright (c) 2007 S. Karger AG, Basel.
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