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CIRCA 1950s - A little white mouse learns to navigate a maze in order to reach the food at the other end as part of scientific research.
CIRCA 1940s - Scientists use rats to test for competition and dominance during the 1940's
CIRCA 1940\xD1 Hungry rats fight over food in an experiment.
1940s - Scientists use rats to test for competition and dominance during the 1940s
UNITED STATES 1940s – Mouse goes through maze and finds cheese. Mouse eats cheese
CIRCA 1940s - Scientists use rats to test for competition and dominance during the 1940's
UNITED STATES 1940s – Mouse goes through maze.

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1950s: A little white mouse learns to navigate a maze in order to reach the food at the other end as part of scientific research surrounding animal thinking in the 1950s.

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