Re-inventing the hook: Orangutans spontaneously bend straight wires into hooks to fish for food
(PHYSorg.com Biology)

The bending of a hook into wire to fish for the handle of a basket is surprisingly challenging for young children under eight years of age. Now, cognitive biologists and comparative psychologists led by Isabelle Laumer and Alice Auersperg observed hook tool-making for the first time in a non-human primate species-the orangutan. To the researchers` surprise, the apes spontaneously manufactured hook tools out of straight wire within the very first trial and in a second task unbent curved wire to make a straight tool.