Tuesday, November 23, 2010

Dogs are smarter than cats: Scientists

Dogs are cleverer than cats because their friendliness has helped them develop bigger brains, scientists at Oxford University claim. It was often thought the feline pet was smarter because it needed less attention but researchers have discovered that cat brains are smaller because they are less social. For the first time, scientists, led by Dr Susanne Shultz, have charted how the brains of mammals have changed over 60 million years. The study, published in the Proceedings of the National Academy of Sciences, revealed that the brains of monkeys grew the most over time, followed by those of horses, dolphins, camels and dogs. The brains of more solitary mammals such as cats, deer and rhino grew more slowly.

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