If you think laughter and comedy are reserved strictly for humans, you’d be wrong. A study in the late 1990s showed that creatures like rats emit ultrasonic vocalizations while playing with or ...

The wrinkly rodent barely seems to age and appears almost impervious to cancer, heart disease, and mental decline. Can these astounding abilities be adapted for humans?

The regenerated forelimb, made from living rat cells, may be the first step toward creating functional, bioartificial limbs. The scientists were... In Massachusetts Lab, Scientists Grow An Artificial ...

Employees at the Environmental Protection Agency’s research campus in North Carolina are preparing to take on a new responsibility. Bring home lab rats as pets. Or maybe some zebra fish. Both animals ...

One study found that rats emitted ultrasonic vocalizations when they were subjected to manual somatosensory stimulation, i.e., tickling. The results of this controversial research were published in ...