What does it mean when a snow leopard, important to species survival, is deemed effectively sterile? That was the topic of conversation at the Louisville Zoo last week after a reproductive assessment ...

Being able to reproduce both sexually and asexually gives the dragons an evolutionary edge, Garcia says. If no mate is handy, a female can bear sons parthenogenetically—and when they’re older, they ...

As the generations dragged on past the 27th iteration, the birth rate began to silently collapse. By the 57th generation, a mere 0.6 percent of the cloned embryos survived. The 58th generation ...

A new study analyzes why the social gesture is important when it comes to information and survival, even among antisocial animals ...

Sperm may lose their ability to navigate in microgravity, raising new questions about whether human reproduction is possible in space.

Scientists have captured rare footage of a sperm whale giving birth, offering a window into the large mammals' behavior.

Two new studies from Project CETI provide the most detailed account of a sperm whale birth ever recorded, revealing ...

The episode, involving a group of sperm whales, adds to evidence that humans aren’t the only species that gets some form of ...

Scientists may have unlocked how to prevent the genetic collapse of wildlife restricted by habitat fragmentation before it ...

Related: Fertility rate in England and Wales plummets to record low Get the Well Enough newsletter with Harry Bullmore for ...

Current World Health Organization (WHO) guidelines typically recommend 2-7 days of abstinence before taking semen samples or ...

After the 25th cloning, harmful genetic mutations built up over the subsequent generations. Read more at straitstimes.com.