Animal testing causes immense suffering for millions of animals each year. Experiments involve injecting animals with drugs, exposing them to radiation, removing organs, forcing inhalation of toxic gases, and inducing anxiety and depression. Most experiments provide no anesthesia, and over 70% do not reduce animal suffering. Common animals used are rats, mice, monkeys and rabbits, which experience stress, disease, and painful procedures without relief from harm. Animal testing is conducted by cosmetics and pharmaceutical companies to test products despite the cruelty involved.