The capybara, a kind of animal from South America, is the largest living rodent(啮齿目动物) in the world. It lives along the lakes and rivers. It can grow up to about 1.3m etres long and weigh up to 79kg. It looks like a large mouse with a big nose, strong legs, small ears and a very short tail. Usually mouse-like animals may not be welcomed by other animals but the capybara always has a lot of different animals around it, because it's friendly to them. Do you know what makes the capybara such a friendly animal?
As the largest rodent animal in the world, the capybara has only a few enemies(敌人). Because of this, it spends most of the day swimming in the water and lying by the river, together with other animals. It lives such a comfortable life that nothing seems to make it worry.
For most animals, it's safe to stay around the capybara. The capybara never eats meat. It mainly eats fruit and some plants, so it won't hurt other animals. The capybara can even help other animals to keep safe. It can notice the danger more easily and the strong legs can help it run away more quickly. When other animals see that, they can also hide(躲藏) themselves in time.
Sometimes, the capybara is happy to be"the animal bus". It's common to see other animals riding on the back of a capybara. That's because these animals can help make the capybara clean by eating the lice(虱子) on its body.
Now the capybara is also becoming popular among people. Some people love the capybara so much that they want to keep it as a pet.
B . 
C . 
D . 
a. It doesn't have many enemies.
b. It has small ears and strong legs.
c. It needs other animals to clean its body.
d. It doesn't eat any other animals for food.
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