Echidnas, also called spiny anteaters, are some of the weirdest mammals in the world. They're among the only mammals that don't give birth to live babies, and they also carry their young in a pouch.

Christine Cooper receives funding from the Australian Research Council. Thank you, Isabella, for your great question. When it comes to breathing, a digging mammal faces some big problems. It has to be ...

Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation, technology, and food. She is the author of "The Ethiopian Wolf: Hope at the Edge of Extinction." The echidna is often ...

Outliers among mammals, monotremes lay eggs instead of giving birth to live young. Only two types of monotremes, the platypus and echidna, still exist, but more monotreme species were around about 100 ...

For more than 60 years, many biologists had begun to wonder if a strange, egg-laying mammal named after British naturalist David Attenborough would ever be seen again. Signs of the mysterious creature ...