animal testing essay
Animal testing can be defined as the process of using animals in experiments.
Normally the research such as biomedical researches, drug tests and toxicology tests are conducted in universities, medical schools, and pharmaceutical companies. Scientists use many types of animals in their experiments such as guinea pigs, hamsters, gerbils, monkeys, chimpanzees, rats, mice, dogs and cats. Around 50-100 millions vertebrates are used in experiments annually and in United States, the number of rats and