This document discusses the use of animals in testing and experimentation. It notes that millions of animals like mice, rats, primates, cats and dogs are kept in laboratories and sacrificed for medical research and testing. While some animal testing has benefited medicine, most animals are killed for cosmetic or profit-driven purposes rather than life-saving illnesses. The document argues that animals have the ability to feel pain and suffering just like humans, and deserve more humane treatment and alternatives to testing that causes them harm.