如何保護動物英語作文

　　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。它通常仍然忠於一個體貼的主人,因為這個狗被稱為人類最好的朋友。人們之間的階級差別沒有生活在狗的一部分。它可以是一個忠實的伴侶,無論是富人還是窮人。

　　狗馴化在人類歷史的大多數時期,因此球員很多。故事被告知關於勇敢的狗,令人欽佩的戰爭或冒著生命危險拯救的人處於危險之中。當龐培——羅馬社群在公元79年被維蘇威火山——終於被挖掘,搜尋者發現一隻狗躺在一個孩子的證據,顯然試圖保護這個年輕人。也許一些世界上數以百萬計的狗可能是英雄,但他們仍然是一個真正的喜悅主人的來源。

　　一隻狗容易符合家庭生活。在讚美和感情。當大師告訴一隻狗,它是好的,動物快樂地搖尾巴。但當主人罵狗,它潛伏了一個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域可以享受一隻狗。中型或小型狗是最適合城市的範圍。大型犬在大面積需要相當大的鍛鍊。

　　然而,狗並不總是值得思考的。近年來狗在城市裡一直在爭論的中心。有些人批評狗主人允許寵物土壤人行道和草坪,儘管在一些城市的法律迫使業主限制他們的狗沿著街道散步。反過來,狗主人認為,動物作為防範破壞者和竊賊,從而保護他們的批評者以及它們的主人。

　　當一個人決定自己的一條狗,他應該準備妥善照顧它。狗保持健康必須正確美聯儲和充分培養及其醫療需求必須得到滿足。狗必須得到適當的訓練表現得彬彬有禮。它不應該虐待或處理不當。否則,它會咬自己的防禦。

　　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。狗有保留的衝動與包。這就是為什麼他們不喜歡獨處太久。一些品種的狗仍然保留了狩獵的本能。

　　狗存在大範圍的`大小,顏色,和性情。一些,比如杜賓犬,德國牧羊犬,作為預警和積極的監督者。其他的,如小獵犬和可卡犬,好玩的家庭寵物,儘管他們的狩獵。還有一些,比如牧羊犬和威爾士科基犬,可以群農場或範圍的動物。每個狗剛才提到的一個純種。一條雜種狗,然而——有許多品種的背景——可以很容易適應家庭生活。

　　狗自史前時代以來一直與人類。這些年來,他們已經在執行各種服務。他們已經把雪橇在雪大片。他們傳遞的訊息,趕羊和牛,甚至救出被困在雪地裡的人。狗也有擔任過的食物來源。古羅馬人據說燉珍貴的某些種類的狗。古代墨西哥的阿茲特克提出了很小的狗,認為是吉娃娃的祖先,給阿茲特克的私人動物園大型食肉動物的統治者。在過去的狗甚至被崇拜為神。最近,他們被用於藥物研究、醫療實驗,和空間科學。蘇聯科學家發射了狗測試能力的乳動物生存的艱辛太空旅行之前人打發了。

　　狗是訓練有素的警犬在和平時期的美國軍隊和其他軍事服務。因為他們的敏銳的嗅覺,狗被警察有時用來追蹤逃跑的囚犯。執法機構也依靠狗的敏銳的嗅覺發現非法毒品。和受過專門訓練的狗充當盲人的“眼睛”,指導的步驟失明的主人在障礙和危害。