Killer teeth! (Orangutan tool manufacture)
Uploader: Primatforskning
Original upload date: Tue, 27 Nov 2012 01:00:00 GMT
Archive date: Sat, 08 Oct 2022 17:38:49 GMT
In horizontal tube problems orangutans have a strong preference for raking food rather than pushing it. So strong, it seems, that Naong prefers to remake a tool that only works for pushing into a slen
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