For generations, laboratory mice have lived and died under fluorescent lights, their world reduced to plastic cages and standardized pellets. When researchers finally moved some of these animals into ...

When scientists opened the doors of a research facility and let carefully bred lab mice loose into a fenced field, they expected skittish, fragile animals to struggle. Instead, the mice rapidly shed ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists have advanced human-animal chimera research by successfully growing human cells within the organs of mice. This ...

In the wild, a mouse or rat leads a precarious life. In the city, they dodge traps, poisons, and broom-wielding humans. In the countryside, they face owls, shotguns, and more poison. As Australia’s ...