When scientists opened the doors of a research facility and let carefully bred lab mice loose into a fenced field, they ...

Animal testing remains a fundamental part of biomedical research. But as funding evaporates, mice, rats and even monkeys may be euthanized. By Emily Anthes On April 1, the Trump administration’s ...

The agency is cutting animal testing of chemicals. Some scientists are concerned, but in the meantime the rats (and zebra fish) need new homes. By Hiroko Tabuchi Employees at the Environmental ...

Curious about the animals most often used in research? Get to know the top five—like mice, rabbits, and goats—and the roles ...