What Are the World's Smartest Pets and Animals?世界上最聪明的宠物和动物是什么？

It is known that some animals are smarter than others. And at some point，humans started keeping them as pets. What are the world’s smartest pets andanimals？ Here are some of them.

众所周知，有些动物比其他动物聪明。在某个时候，人类开始把它们当宠物饲养。世界上最聪明的宠物和动物有哪些？以下是其中的几种。

1. African Grey Parrots

非洲灰鹦鹉

African grey parrots areone of the most intelligent1birds in the world. They canunderstand some human languageand speak like a human. Researchershave found that they also haveproblem -solving2 skills and excellentmemories that could be better than ahuman toddler3.

非洲灰鹦鹉是世界上最聪明的鸟类之一。它们能听懂一些人类语言，并模仿人类说话。研究人员发现，它们解决问题的技能和出色的记忆力可能比人类幼儿还要好。

2. Pigs

猪

Many researchers found thatpigs have the spatial awareness4and good memory as a humantoddler. They also have high levels ofsocial5 and emotional6 intelligenceto communicate with other pigs andmany other kinds of animals.

许多研究人员发现，猪和人类幼儿一样具有空间意识和良好的记忆力。它们也有很高的社交智能和情商，可以和其他猪以及其他种类的动物交流。

3. Dolphins

海豚

Dolphins are some of the smartestanimals in the world. They are like thehumans of the sea. Their brains weigh about3.5 pounds， giving them the second-highestbrain -to -body size ratio7 in the animalworld. Dolphins have been known to usetheir high intelligence to make social groupsand use tools.

海豚是世界上最聪明的动物之一，它们就像海洋中的人类。它们的大脑重约3.5磅，这让它们的大脑与身体的比例在动物界排名第二。众所周知，海豚利用它们的高智商来组成社会群体，并会使用工具。

4. Crows

乌鸦

birds in the world. They are not ascharismatic8 as the African greyparrotes， but they are better atdealing with the difficulties in bothcountries and cities.

乌鸦是世界上最聪明的鸟。它们不像非洲灰鹦鹉那样有魅力，但它们更擅长应对不管是乡村还是城市里的困难。

5. Squirrels

松鼠

Squirrels are so cute and they aresmarter than we think. They know howto store and protect their food inlong winter. To confuse9 the thieves10， they store their food indifferent places.

松鼠太可爱了，它们比我们想象的还要聪明。它们知道如何在漫长的冬天储存和保护自己的食物。为了迷惑小偷，它们把食物存放在不同的地方。

Those pets and animals areimportant part of our world. We shouldknow them and love them more.

那些宠物和动物是我们这个世界重要的组成部分。我们应该多了解和爱护它们。

（英语原文选自：animals.howstuffworks.com）