The document is about animal experimentation. It discusses how animals like mice, rabbits, dogs, and monkeys are widely used by researchers and scientists in laboratories for scientific and medical purposes. They use the animals to investigate biological processes, study diseases and their causes, test drugs and surgical techniques, and evaluate product safety. Scientists are able to learn about the human body by studying animals because many animal functions are similar to humans, some animals suffer from the same diseases, and animals share many identical genes with humans.