There’s a common test called LD50 (lethal dose 50) which involves finding out which dose of a chemical will kill 50% of the animals used in the experiment. The US Department of Agriculture (USDA) reported in 2010 that 97,123 animals suffered pain during experiments while getting no anesthesia for relief, including 1,395 primates, 5,996 rabbits, 33,652 guinea pigs, and 48,015 hamsters. Animals used in experiments are subjected to force feeding, forced inhalation, food and water deprivation, long periods of physical restraint, the infliction of burns and wounds to study the healing process, the infliction of pain to study its effects and