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It will cause outrage among some cat owners, but research suggests the pets are not as clever as some humans think they are – or at least think in a way we have yet to fathom.
Psychology lecturer Britta Osthaus says cats do not understand cause-and-effect connections between objects. She tested the thought processes of 15 of them by attaching fish and biscuit treats to one end of a piece of string, placing them under a plastic screen to make them unreachable and then seeing if the cats could work out that pulling on the other end of the string would pull the treat closer."
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