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    The Animals That Taste Only Saltiness

      Taste plays an important function for most animals far beyond enriching their culinary experiences. At its most basic level, it’s a last-ditch defense against poison, telling the eater whether to swallow or spit out a mouthful of potentially lethal material. Humans can detect five primary tastes: sweet, sour, salty, bitter, and umami (sometimes called “savory”). […]