The skull of a black rat (right) compared with a fairly complete skull of one of Timor's other extinct giant rats (left). The giant rat shown here isn't the biggest of the extinct rats ...

The more practice animal experimenters have, the more it benefits animal welfare. Using 3D-printed models of mouse and rat skulls dates back to work by researchers at Roche in Basel. They published ...

"We were surprised to find the heftier skull of the desert rat-kangaroo isn't necessarily adapted for biting into harder ...