A breakthrough experiment from China’s space program has revealed unprecedented insights into the possibilities of mammalian reproduction after spaceflight. In a controlled mission involving four mice ...

A small brown mouse has just done something no mammal has ever done before: give birth on Earth after spending part of its ...

(CNN) — Scientists have newly described three extraordinary species of tree toad that leapfrog over the egg-to-tadpole stage. The females give birth on land to dozens of toadlets, each measuring just ...

Learn how an endangered species that rarely has twins is caring for two newborns — and why the coming weeks matter most.

An international team of researchers have identified three new species of enchanting, pustular, tree-dwelling toads from Africa. Their solution for having offspring away from water? Skipping the ...

Despite being mammals, these remarkably cancer-resistant animals share a lot in common with cold-blooded species.

The reproductive biology of reptiles encompasses a wider range of strategies than is often assumed in general accounts of the ...