In a new study, wild regent honeyeaters became vocal tutors, teaching their disappearing song to birds in a captive breeding ...

The warming world has disrupted the timing for plant and animal reproduction, and it's usually bad news for species that ...

I was especially flummoxed by this sad man because I had just immersed myself in The Intimate Animal, a new book by the ...

A national movement called #ExecuteAWA believes the country has reached a tipping point and compassion alone is no longer ...

Some animals have reproductive strategies so extreme that they can lead directly to their own death. In certain species, ...

As humpback whales recover, older males are fathering more calves, revealing how whaling still shapes mating and competition ...

Microglia (immune cells) and the RANK protein are essential for triggering puberty and maintaining fertility in the brain.

Domestic pigs reproduce through a breeding process that is closely managed on farms around the world. During mating, a male pig, known as a boar, mounts the female, called a sow, in a behavior driven ...

Nobody has ever known where tiger sharks go to mate. But new data suggests there’s one Hawaiian spot that draws a big ...

A new study shows that as humpback whale populations recover from past whaling, older males are gaining a major advantage in ...