Scientists studying human health may be getting bad information from an unlikely source — their own lab rats. Many rats and mice used for research are fat, out of shape, and "on a trajectory to ...

They are key in scientific discoveries that benefit humans, and along with mice, they make up for 95 percent of all laboratory studies. But most of these animal research subjects are "sacrificed" once ...

The lab rat of the future may have no whiskers and no tail — and might not even be a rat at all. With a European ban looming on animal testing for cosmetics, companies are giving a hard look at ...