A comparative psychologist at the Max Plank Institute in Germany, named Michael Tomasello ran a series of tests on dogs, in which they had to find which sealed container had yummy dog food in it.
德国马克斯普朗克研究所的比较心理学家迈克尔·托马·塞洛对狗做了一系列的测试，让它们判定，哪个封着的盒子里装着美味的狗粮。
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