Add Yahoo as a preferred source to see more of our stories on Google. Small rodent poking out of hole. Mickey Mouse and Remy in Ratatouille might be adorable characters on the screen, but there is ...

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 ...

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 ...

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 ...