Ambidextrous squirrels do best

Lisa Leaver and colleagues at Exeter University have studied whether grey squirrels are left-handed or right-handed in laboratory tests. Many squirrels appeared to favour their left or their right paw, but these squirrels performed less well than those which were ambidextrous. The studies, which will be published in the scientific journal Learning and Behaviour, contribute to the debate about lateralisation and cognitive performance. (Belfast Telegraph, Metro, Sun, BBC Science Focus, Exeter University)

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