The birth of a rare tree kangaroo joey at Chester Zoo is a "major milestone" for the threatened species, conservationists ...

A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan ...

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

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.