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盘点：世界上最聪明的动物们

Bees 蜜蜂

Bees are known mostly for their sting. But they are also highly intelligent little creatures. Researchers taught bees to identify which of two horizontal lines was above the other. When they got the answer right, they received a sugar-syrup reward. The thing is, the researchers only taught them how to identify whether lines that were horizontal were above or below. So, when the researchers showed the buzzers vertical lines, the bees simply flew away. They knew there was no way to get that tasty treat!

说起蜜蜂，第一反应多是它们屁股上的刺会蜇人。但蜜蜂也是一群有着相当高智商的小家伙们。研究人员教会蜜蜂分辨两条水平线中哪一条更高。当蜜蜂选对了，会得到糖浆作为奖赏。结果，蜜蜂只学了分辨水平线，当研究人员让它们分辨垂直线的时候，它们完全不予理睬。因为它们知道，除了水平线都没糖吃。

Octopuses 章鱼

Octopuses are in a league of their own. Most invertebrates don’t have the level of intelligence that scientists say these weirdly shaped sea creatures do. In one cool study, researchers tested whether the creatures would be able to distinguish between two different people. They had two individuals interact with an octopus, with one acting extremely friendly and another being cold and standoffish. After a short while, when the two people would enter their living area, the octopus would ignore the impersonal one in favor of the more friendly guest.