Humankind’s common ancestor with other mammals may have been a roughly ratsize animal that weighed no more than a half a pound, had a long furry tail and lived on insects. In a six-year study of the ...

For decades, scientists have assumed that mammals and their relatives that survived challenging times (like those during mass extinctions) made it because they were generalists that were able to eat ...

A new look at a fossil mammal with powerful front legs for digging is clearing up questions about the origin of a group of strange and scaly modern-day creatures called pangolins. Subscribe to read ...

If textbooks ever made you believe mammals like humans, cats, and kangaroos first evolved somewhere up north, think again. A remarkable discovery from Australia has flipped our understanding of mammal ...

Orange cats have always stood out in the living room, but new research shows they also stand apart in the mammal family tree. Scientists have now traced their vivid coats to a genetic arrangement that ...

Scientists have unveiled a detailed portrait of the earliest ancestor of dogs, horses, humans and all other mammals that don't lay eggs or carry their young in a pouch — even though it hasn't yet been ...