One of the most provocative, published in 1908, was a study of rats and rabbits that were provided a regular supply of ethyl alcohol. After the scientists had created a colony of alcoholic animals, they offered the same laboratory cocktails to animals with no previous exposure. The novice drinkers became stumbling drunk on the same amount of alcohol that no longer had any effect on the habituated rats and rabbits. By doing a series of blood draws, the scientists found that their habitués had somehow learned to better process their drinking binges. The unaccustomed animals absorbed 20 percent
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