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Researchers show that rats are actually kind and generous, contrary to the general impression they are pests, the Daily Mail reported.

Chicago University scientists housed rats in pairs and then placed one in a transparent tube inside the cage, and found that the second rat was distressed until it worked out how to free the first one.

The creatures also selflessly shared treats with their cage-mates. The roaming rat became agitated at the sight of its trapped friend.

Even more, the free animal learned how to open the tube door, without being shown, to free its mate. （點(diǎn)擊《每日郵報(bào)》查看原文）

老鼠其實(shí)慷慨又友好

???????據(jù)英國(guó)《每日郵報(bào)》報(bào)道，人們通常認(rèn)為老鼠是害蟲，研究人員發(fā)現(xiàn)，其實(shí)它們慷慨友好。

???????來自美國(guó)芝加哥大學(xué)的科學(xué)家將老鼠成對(duì)圈養(yǎng)，之后把其中一只關(guān)于籠內(nèi)的透明管道，結(jié)果發(fā)現(xiàn)，它的同伴會(huì)很悲傷，直到找到釋放被關(guān)者的方法。

???????它們會(huì)與籠中同伴無私的分享食物。外面的老鼠看到被關(guān)同伴會(huì)焦慮不安。

???????甚至，盡管沒人教它們，自由老鼠還會(huì)學(xué)著開鎖，試圖釋放被關(guān)者。

(China.org.cn February 2, 2012)