To create mouse-rat "chimeras," researchers injected rat stem cells into mouse embryos that lacked some genes for brain development. Creative Touch Imaging Ltd. / NurPhoto via Getty Images Scientists ...

Baby mice were successfully bred by scientists for the first time using two male mice. While specialists warn that relatively few mice embryos matured into living mouse pups, and nobody knows if it ...

Mice may breed year-round, but when living outdoors they mostly breed in spring and fall. A female may have 5 to 10 litters annually. House mice live in and around homes, farms, commercial ...

Colossal Biosciences, a Dallas-based company focused on de-extinction, has unveiled its latest success: golden, long-haired mice. Affectionately dubbed woolly mice, these curly cuties mark an ...