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 ...

Now, using similar methods as the mouse-rat hybrid, scientists have produced the first human-pig hybrid embryo, which is more difficult than you might think. Getting cells from one species to ...

The Rat may be small but, due to its quick-wittedness, it takes the No.1 spot in the 12-year cycle of animals in the Chinese zodiac. Legend has it that it hitched a ride on the back of the Ox in ...