Every year in the United States, millions of animals—potentially as high as 110 million—are used in research. These animals are subjected to barbaric, flawed, and often useless experiments, in many cases, repeatedly. Most of these animals—mice and rats—are essentially unprotected by the law, allowing researchers to subject them to painful experiments and neglect with impunity. In addition, hundreds of thousands of guinea pigs, rabbits, hamsters, primates, dogs, pigs, cats, sheep, and marine animals are confined in tiny cages and subjected to cruel experiments. Read more about our work to challenge the animal research industry.