The house mouse (Mus musculus) is one of the most common mammals worldwide. It can be found in all parts of the United States ...

But marsupials remain much less common than other mammals. Opossums and other marsupials exist in North and South America, but Australia is the only continent where marsupials—and monotremes ...

The order Cetacea includes marine mammals, such as whales, dolphins, and porpoises. Fossil evidence suggests that the cetaceans share a common ancestor with land-dwelling mammals that began living ...

The planet’s earliest mammals are an important part of our evolutionary history, yet remain shrouded in mystery. One of them, Mixodectes pungens lived in western North America during the early ...

"And in those cases it's quite common to find dinosaurs with feathers, but also mammals with with hair." D'Alba hopes research will continue on the mammals to learn more about those colours ...