如何保護(hù)動(dòng)物英語(yǔ)作文
The dog is one of the most popular pets in the world. It ordinarily remains loyal to a considerate master, and because of this the dog has been called man's best friend. Class distinctions between people have no part in a dog's life. It can be a faithful companion to either rich or poor.
Dogs have been domesticated for most of human history and have thus endeared themselves to many over the years. Stories have been told about brave dogs that served admirably in war or that risked their lives to save persons in danger. When Pompeii--the Roman community destroyed by Mount Vesuvius in AD 79--was finally excavated, searchers found evidence of a dog lying across a child, apparently trying to protect the youngster. Perhaps few of the millions of dogs in the world may be so heroic, but they are still a source of genuine delight to their owners.
A dog fits easily into family life. It thrives on praise and affection. When a master tells a dog that it is good, the animal happily wags its tail. But when a master scolds a dog, it skulks away with a sheepish look and with its tail tucked between its legs.
People in the city as well as those in other areas can enjoy a dog. Medium-size or small dogs are best suited for the confines of the city. Large dogs need considerable exercise over a large area.
Dogs are not always well thought of, however. In recent years dogs in the city have been in the center of controversy. Some people have criticized dog owners for allowing their pets to soil sidewalks and lawns, although in some cities laws oblige owners to walk their dogs along street curbs. In turn, dog owners have argued that the animals serve as protection against vandals and burglars and thus protect their detractors as well as their owners.
When a person decides to own a dog, he should be prepared to care for it properly. For a dog to stay healthy it must be correctly fed and adequately groomed, and its medical needs must be met. For a dog to be well-mannered it must be properly trained. It should never be ill-treated or mishandled. Otherwise, it will bite in its own defense.
The wild ancestors of all dogs were hunters. Wolves and other wild relatives of the dog still hunt in packs for their food. Dogs have retained the urge to be with the pack. This is why they do not like to be left alone for long. Some breeds of dogs still retain the hunting instinct.
Dogs exist in a wide range of sizes, colors, and temperaments. Some, such as the Doberman pinscher and the German shepherd, serve as alert and aggressive watchdogs. Others, such as the beagle and the cocker spaniel, are playful family pets, even though they were bred for hunting. Still others, such as the collie and the Welsh corgi, can herd farm or range animals. Each of the dogs just mentioned is a purebred. A mongrel dog, however--one with many breeds in its background--can just as easily fit into family life.
Dogs have been with humans since prehistoric times. Over the years they have performed various services. They have pulled sleds over snowy tracts. They have delivered messages, herded sheep and cattle, and even rescued persons trapped in the snow. Dogs have served as a source of food, too. The ancient Romans are said to have prized certain kinds of dog stew. The Aztecs of ancient Mexico raised tiny dogs, thought to be the forebears of the chihuahua, to feed the large carnivores in the private zoos of the Aztec rulers. In the past dogs have even been worshiped as gods. Recently, they have been used in drug research, medical experimentation, and space science. Soviet scientists launched dogs into space to test the ability of mammals to survive the rigors of space travel before people were sent up.
Dogs are trained as guard dogs in peacetime by the United States Army and other military services. Because of their keen sense of smell, dogs are used by police at times to track down escaped prisoners. Law enforcement agencies also rely on the dog's acute sense of smell to uncover illegal drugs. And specially trained dogs serve as the "eyes" of the blind, guiding the steps of their sightless masters around obstacles and hazards.
狗是世界上最受歡迎的寵物之一。它通常仍然忠于一個(gè)體貼的主人,因?yàn)檫@個(gè)狗被稱(chēng)為人類(lèi)最好的朋友。人們之間的階級(jí)差別沒(méi)有生活在狗的一部分。它可以是一個(gè)忠實(shí)的伴侶,無(wú)論是富人還是窮人。
狗馴化在人類(lèi)歷史的大多數(shù)時(shí)期,因此球員很多。故事被告知關(guān)于勇敢的狗,令人欽佩的戰(zhàn)爭(zhēng)或冒著生命危險(xiǎn)拯救的人處于危險(xiǎn)之中。當(dāng)龐培——羅馬社區(qū)在公元79年被維蘇威火山——終于被挖掘,搜索者發(fā)現(xiàn)一只狗躺在一個(gè)孩子的證據(jù),顯然試圖保護(hù)這個(gè)年輕人。也許一些世界上數(shù)以百萬(wàn)計(jì)的狗可能是英雄,但他們?nèi)匀皇且粋�(gè)真正的喜悅主人的來(lái)源。
一只狗容易符合家庭生活。在贊美和感情。當(dāng)大師告訴一只狗,它是好的,動(dòng)物快樂(lè)地?fù)u尾巴。但當(dāng)主人罵狗,它潛伏了一個(gè)羞怯的外觀和它的兩腿之間夾著尾巴。
城市的人們以及那些在其他領(lǐng)域可以享受一只狗。中型或小型狗是最適合城市的范圍。大型犬在大面積需要相當(dāng)大的鍛煉。
然而,狗并不總是值得思考的。近年來(lái)狗在城市里一直在爭(zhēng)論的中心。有些人批評(píng)狗主人允許寵物土壤人行道和草坪,盡管在一些城市的法律迫使業(yè)主限制他們的狗沿著街道散步。反過(guò)來(lái),狗主人認(rèn)為,動(dòng)物作為防范破壞者和竊賊,從而保護(hù)他們的批評(píng)者以及它們的主人。
當(dāng)一個(gè)人決定自己的一條狗,他應(yīng)該準(zhǔn)備妥善照顧它。狗保持健康必須正確美聯(lián)儲(chǔ)和充分培養(yǎng)及其醫(yī)療需求必須得到滿足。狗必須得到適當(dāng)?shù)挠?xùn)練表現(xiàn)得彬彬有禮。它不應(yīng)該虐待或處理不當(dāng)。否則,它會(huì)咬自己的防御。
所有的狗都是獵人的野生祖先。狼和其他的野生親緣狗仍然集體覓食的食物。狗有保留的沖動(dòng)與包。這就是為什么他們不喜歡獨(dú)處太久。一些品種的狗仍然保留了狩獵的本能。
狗存在大范圍的大小,顏色,和性情。一些,比如杜賓犬,德國(guó)牧羊犬,作為預(yù)警和積極的監(jiān)督者。其他的,如小獵犬和可卡犬,好玩的家庭寵物,盡管他們的狩獵。還有一些,比如牧羊犬和威爾士科基犬,可以群農(nóng)場(chǎng)或范圍的動(dòng)物。每個(gè)狗剛才提到的一個(gè)純種。一條雜種狗,然而——有許多品種的背景——可以很容易適應(yīng)家庭生活。
狗自史前時(shí)代以來(lái)一直與人類(lèi)。這些年來(lái),他們已經(jīng)在執(zhí)行各種服務(wù)。他們已經(jīng)把雪橇在雪大片。他們傳遞的消息,趕羊和牛,甚至救出被困在雪地里的人。狗也有擔(dān)任過(guò)的食物來(lái)源。古羅馬人據(jù)說(shuō)燉珍貴的某些種類(lèi)的狗。古代墨西哥的阿茲特克提出了很小的狗,認(rèn)為是吉娃娃的祖先,給阿茲特克的私人動(dòng)物園大型食肉動(dòng)物的統(tǒng)治者。在過(guò)去的狗甚至被崇拜為神。最近,他們被用于藥物研究、醫(yī)療實(shí)驗(yàn),和空間科學(xué)。蘇聯(lián)科學(xué)家發(fā)射了狗測(cè)試能力的哺乳動(dòng)物生存的艱辛太空旅行之前人打發(fā)了。
狗是訓(xùn)練有素的警犬在和平時(shí)期的美國(guó)軍隊(duì)和其他軍事服務(wù)。因?yàn)樗麄兊拿翡J的嗅覺(jué),狗被警察有時(shí)用來(lái)追蹤逃跑的囚犯。執(zhí)法機(jī)構(gòu)也依靠狗的敏銳的嗅覺(jué)發(fā)現(xiàn)非法毒品。和受過(guò)專(zhuān)門(mén)訓(xùn)練的狗充當(dāng)盲人的“眼睛”,指導(dǎo)的步驟失明的主人在障礙和危害。
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