One of the main arguments that animal testing proponents have is that the Animal Welfare Act protects animals. Therefore animals are not treated unfairly during experiments, so it is acceptable to test on animals. One of the requirements set by this law is that the IACUC (Institutional Animal Care and Use Committees) reviews all experiments so that the least amount of harm is done to the animals.  Since the IACUC does inspect research methods, proponents believe that the amount of suffering animals go through is minimized and therefore acceptable to test on them. Another requirement of the Animal Welfare Act is that the law demands research facilities to be licensed and once they are licensed, they must comply with having random and unannounced inspections by the IACUC. Since the IACUC can inspect researchers at any point, proponents of animal testing believe that scientists do not treat animals inhumanely and do comply with all of the regulations. Although the AWA might make scientists think twice about treating animals unfairly and potentially protect some animals, the AWA does not protect the most important animals in this case. Birds, rats and mice, which make up 95% of the animals used in animal testing, are excluded from the AWA (Lin 1). This means that all the regulations set in place to protect animals do not apply to these ones, which defeats the purpose of the law. In addition, many members of the IACUC are often people who are some how affiliated with animal researchers. The question then becomes how objective they are in evaluating how fairly animals are treated in the experiments that are conducted on them (Lin 1).