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In the battle for survival, brawn isn't always enough to keep you alive. Animals have learned to use their brains to solve the eternal problems of getting food, finding shelter and protecting family. From whales that create bubble walls to catch their fish, to dolphins that work with humans to catch their dinner, to prairie dogs that speak their own language. These brainiacs will have you cowering behind the sofa as they flaunt their intelligence and apply logic to fulfill instinctual needs.