We homo sapiens are easily flattered. We like dolphins because they seem to like us. They smile--or rather, their mouths curve upward in an illusion of cheeriness--and we feel the urge to touch, to pet, to be nearer. It hardly registers that dolphins smile even when they have nothing to be happy about.
Luna died smiling. The bottle-nosed dolphin was captured last December off the southwest coast of Baja California. For two hours, she traveled in a coffin-like trailer with virtually no water. When she arrived at her destination, an aquarium at La Concha Beach Resort in La Paz, Mexico, she...