Biologists have long assumed a simple rule: a female produces offspring of her own species. It basically goes without saying; ...

Reproduction in the animal world is all kinds of freaky, from penis jousting to mammals laying eggs, there seems to be just ...

Bizarrely, Iberian harvester ant queens lay eggs that turn into male builder harvester ants, and some of her offspring are ...

The researchers even coined a word for it, xenoparity, meaning “foreign birth”. It pushes the boundaries of what we mean by ...