ESR has said that it has no plans to continue the federally funded experiments, but these animals are just a few out of the millions killed each year for research and testing.
Animal testing is a complicated issue, but wherever you stand it's clear that many experiments cause more suffering than they're worth. Around 25 million vertebrates - monkeys, dogs, cats, rabbits, rats and more - are killed in U.S. labs each year, often for ineffective or needless experiments. For example, 92 percent of drugs that pass animal trials fail to be approved for humans.
Others are thoughtlessly cruel, such as the University of Wisconsin's brutal maternal deprivation research. In those studies, researchers traumatized baby monkeys through tactics like drugging their mothers so they'd think they were dead, or scaring them with snakes, which monkeys are innately terrified of, in an effort to induce psychosis. They then slaughtered them to examine their brains.