Professor Russell Gray, from the University of Auckland, explained: “The crows needed to understand they needed the short tool on the piece of string to get the long tool, and then use the long tool to get the food .” … But it might not just be birds and primates with tool-using skills – in late 2009, a paper published in the journal Current Biology suggested that veined octopuses in Australia were using halved coconut shells as tools, by scooping them from the seabed, …
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