1， experimental animal breeding: experimental animal breeding research experimental animal genetic improvement and genetic control， and wild animals and livestock of experimental 2， experimental animal medicine: experimental animal medicine specialized experimental animal diseases diagnosis， treatment， prevention and it how in biomedical application 3 and comparative medical: comparative study of all animals， including man the similarities and differences between the basic life 4， experimental animal ecology: experimental animal living environment and conditions， such as animals houses， animal facilities， ventilation， temperature， humidity， light and noise， cage with， feed， water and various mat 5， animal experiment technology: the study of animal experiments various operating technology and experimental methods， including experimental animal raising management technology and itself of various monitoring technology，
When farmers kill a large number of eagles， for example， each animal has a place in the natural Fortunately， animals need to be Animals are natural Over the course of our history， people have been wasting these In the United States， these species are considered in danger because there are no eagles to control their numbers， and because once they are dead， why should people care about movement? Thousands of species of animals have disappeared from the earth and destroyed forever One animal can cause many Animals are not only beautiful and interesting corn and grains destroyed by mice and Mice and mice breed There will never be so many countries passing Why， farmers because Eagles eat mice and mice? Some groups raise money to let people know that these laws prohibit killing any animal or plant on the dangerous list， Some people are trying to help save animals， and just because they are hindering the growth of endangered animals， because we need animals， and today hundreds of animals are on the danger They are not just sources of Animals are killed for their fur and They are trying to get the government to protect animals in danger by law for food :中文翻译：当农民杀死大量的鹰，例如每一种动物都在自然平衡中占有一席之地。幸运的是，动物需要保护动物是自然资源，在我们的历史长河中，人们一直在浪费这些资源，而在美国，这些物种被认为处于危险之中，因为没有老鹰来控制它们的数量，而且因为一旦它们死了，人们为什么要关心运动成千上万种动物已经从地球上消失了永远毁灭一种动物会造成许多问题动物不仅仅是美丽有趣的玉米和谷物被老鼠和老鼠破坏了，老鼠和老鼠繁殖很快，再也不会有那么多国家通过了法律为什么，农民们因为鹰吃老鼠和老鼠一些团体筹集资金让人们知道这些法律禁止杀死危险名单上的任何动物或植物的问题，一些人正在努力帮助拯救动物，并且仅仅是因为它们阻碍了濒危动物数量的增长，因为我们需要动物，今天还有数百种动物被列入了危险名单，它们不仅仅是食物的来源动物被杀是为了它们的皮毛和羽毛，它们试图让政府通过法律保护处于危险中的动物，为了食物。
