Correct identification of rodent poop means finding the best way to get rid of them. Mouse poop is small and scattered, while rat poop is larger and clustered.

What does it feel like to be a rat? We will never know, but some very unusual mice may now have an inkling. In a series of new experiments, bits of rat brain grew inside the brains of mice. Donor stem ...

Rats and mice are mutating and potentially becoming resistant to the poison that cities have long used to stop their populations from exploding, a recent study has warned. More than one-third of 143 ...

If mice ever wonder what it's like to experience the world as a rat, some are now able to live that dream, at least when it comes to the sense of smell. Researchers led by Columbia University's ...

Mice lacking an olfactory system have had their sense of smell restored with neurons from rats, the first time scientists have successfully integrated the sensory apparatus of one species into another ...