There is a limit on how many times a mammal can be cloned before suffering "mutational meltdown," Japanese scientists have ...

The federal government has failed to give adequate information on deaths of killer whales and other marine mammals that become entangled in commercial trawling gear in Alaska waters, claims a lawsuit ...

This is read by an automated voice. Please report any issues or inconsistencies here. More than 400 marine mammals have been reported stranded or sickened along California’s Central Coast since June.

Scientists have updated the conservation status of hundreds of mammals in Argentina, adding previously unassessed species and ...

Many mammals have fur the color of brown and black. Why don't they have more exotic colors, like purple and neon pink?

According to most experts, the first mammal was Morganucodon, a small, shrew-like rodent that appeared during the Jurassic Period, approximately 200 million years ago. It weighed a few ounces and ...

The surprising story of mammal evolution begins long before the age of dinosaurs. Witness how some of our prehistoric mammal relatives survived global catastrophes, defying extinction and evolving ...

Being nursed by a single parent could be an evolutionary strategy to curb the spread of harmful microbes in mammals, according to a novel theory developed by mathematicians. The rainforests of ...

A mammal phylogeny with colors depicting the diet of living species and their ancestors; silhouettes of myrmecophagous mammals surround the tree. An inset diagram in the upper right illustrates ...