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 ...

Earth’s history spans 4.5 billion years, and throughout this vast timeline, our planet has been home to creatures so strange they seem ripped from the pages of science fiction. From ancient seas ...

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 ...