This semi-aquatic mammal may look improbable, but its biology reveals how evolution shapes even the strangest mammal bodies.

Add Yahoo as a preferred source to see more of our stories on Google. Platypuses are monotremes, one of the oldest branches of mammals, and they reproduce by laying eggs instead of giving birth to ...

Some of the strangest mammals on the planet just got even stranger. It turns out that echidnas — spine-covered, egg-laying mammals with beaks that shuffle through the undergrowth of Australian forests ...

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 ...

This mammal, about the size of an opossum, had a mix of strange characteristics that haven't been seen together before. It highlights evolutionary strangeness that can arise when evolution occurs in ...

Platypuses are weird looking. They look like someone stitched together a duck and a beaver—flat bill, webbed feet, and a broad tail. But their appearance isn’t even the strangest thing about them. Not ...

Researchers have uncovered the fossil of an early mammal named the "crazy beast" that lived 66 million years ago alongside dinosaurs and giant crocodiles on Madagascar, and it's unlike any mammal ever ...