Pregnant mommas must make a tough choice: preserve energy for themselves or invest it in their little ones. Now new research suggests that higher levels of the hormone leptin may fool a hamster’s ...

The ground squirrel and the Syrian hamster, two rodents that hibernate in the winter, do not feel cold in the same way as non-hibernators, such as rats or mice. Researchers have discovered that ...

If you put a hamster on steroids, he'll attack other hamsters more quickly and more often, and bite a lot. Cut him off and you might think he'd mellow out. Not so. Hamsters on steroids remain ...

Nanotechnology has restored the sight of blind rodents, a new study shows. Scientists mimicked the effect of a traumatic brain injury by severing the optical nerve tract in hamsters, causing the ...

The global obesity crisis shows no signs of abating, and we urgently need new ways to tackle it. Consuming fewer calories and burning more energy through physical activity is a proven way to lose ...