科学家已经鉴别出46900多种脊椎动物。包括鲤鱼、黄鱼等鱼类动物，蛇、蜥蜴等爬行类动物，青蛙，娃娃鱼等两栖类动物，以及鸟类以及和红熊猫等哺乳类动物等。
关于动物的英语作文范文一：
Dolphin is my favourite animal.
It is one of the most precious animals. Their bodies are very long, about one zhang(丈). Dolphins live in the sea. They live on fish, shrimps and so on.
Dolphins are very friendly and peaceful. They never attack people. Instead, they have saved many people in danger in the past years. How helpful the dolphins are!
Dolphins are very clever. People often train them so that they can give a dolphin show which brings people a lot of happiness and joy.
Unluckily, the number of dolphins is getting smaller and smaller. Because of water pollution, there is less and less space for dolphins. Many people make money by hunting dolphins. If we don’t protect them, maybe we’ll lose our good friends one day. As a student, I hope more and more people should take actions to protect dolphins.
关于动物的英语作文范文二：
我的宠物是一条可爱的狗。它的名字是"点点" 。因为有很多黑的圆圈在它的皮肤上。"点点" 是非常友好的。许多孩子喜欢和它玩。他的喜爱食物是肉骨头。 他的喜爱玩具是玩偶。" 点点" 喜欢非常跑。它跑得非常快速并且它有一个女朋友。它的名字"娜娜" 。它的皮肤也有很多黑圈子。我非常喜欢我的宠物。这是一只好宠物!!
My pet is a lovely dog.Its name is "dian dian".because there are a lot of black circle on its skin.the "dian dian" is very friendly.Many childen like play with him.His favourite food is meat bones. His favourite toy is a doll. 'dian dian ' likes to run very much.It can run very fast and it has a girl friend.its name "na na".There are a lot of black circle on its skin,too.I like my pet very much.It is a good pet!!
关于动物的英语作文范文三：
Animals Need Protecting
1、Animals have been killed for their fur and feathers, for food, for sport, and simply because they were in the way. 人们杀死动物，获得它们的皮毛，把它们当作食物或运动方式，或者只是因为它们碍事。
2、And they try to get the governments to pass laws protecting animals in danger.
Animals are natural resources that people have wasted all through our history. Animals have been killed for their fur and feathers, for food, for sport, and simply because they were in the way. Thousands of kinds of animals have disappeared from the earth forever. Hundreds more are on the danger list today. About 170 kinds in the United States aloneare considered in danger. 他们也努力使政府通过保护濒危动物的法律。
3、 Because hawks eat rats and mice, with no hawks to keep down their numbers, the rats and mice multiplied quickly. 为什么?因为鹰吃鼠类，没有鹰控制它们的数量，鼠类就会迅速繁殖。
Animals are natural resources, in the entire history, mankind has been in waste the resources. People kill animals, their fur, think of them as food or sport, or simply because they were in the way. Thousands of kinds of animals has from the earth forever disappeared. Now also on hundreds of species also on the list of endangered animals. Only the United Kingdom roughly 170 species are thought to be in danger.
Why should people care? Because we need animals, and because once they are gone, there will never be any more.Animals are more than just beautiful or interesting. They are more than just a source of food. Every animal has its place in the balance of nature. Destroying one kind of animal can create many problems. For example, when farmers killed large numbers of hawks, the farmers' stores of corn and grain were destroyed by rats and mice. Why? Because hawks eat rats and mice, with no hawks to keep down their numbers, the rats and mice multiplied quickly.
Luckily, some people are working to help save the animals. Some groups raise money to let people know about the problem. And they try to get the governments to pass laws protecting animals in danger. Quite a few countries have passed laws. These laws forbid the killing of any animal or planton the danger list. Slowly, the number of some animals in danger is growing.
翻译：
动物需要保护
动物是自然资源，在整个历史过程中，人类一直在糟蹋着这种资源。人们杀死动物，获得它们的皮毛，把它们当作食物或运动方式，或者只是因为它们碍事。成千上万种动物已经从这个地球上永远地消失了。现在另外上百种动物也上了濒危动物名单。仅英国大概就有170种被认为处于危险当中。
为什么人们应该感到担忧呢?因为我们需要动物，因为它们一旦消失，就永远不会再出现。动物不仅仅是漂亮或有趣。它们不仅仅是人类的食物来源。在维持自然平衡中，每种动物都有其作用。毁灭某种动物会导致许多问题。比如，农民们如果杀死为数众多的鹰，他们谷物和粮食的仓库就会受到老鼠和田鼠的破坏。 为什么?因为鹰吃鼠类，没有鹰控制它们的数量，鼠类就会迅速繁殖。
幸运的是，有些人正在努力帮助拯救这些动物。有些组织筹钱以便人们了解这一问题。他们也努力使政府通过保护濒危动物的法律。很多国家已经通过了法律。这些法律禁止杀害濒危名单上的动植物。某些濒危动物的数目正在慢慢地不断上升。