Being a mother is a tremendous accomplishment and one of the most challenging jobs in the world. This applies even in the animal kingdom, where it can be a literal dog-eat-dog world for many species.

A surprising new study has found that blocking reproduction in some mammals may increase their life expectancy by an average ...

Discover more about the egg-laying monotremes of Oceania and the ancient traits they still carry.

There have been some large animals discovered over the course of history. In the 1960s, the largest bear ever caught outsized the average elephant, and this bear still holds the record today. The ...

Discover the bizarre facts and fiction about the Virginia opossum's incredible symmetrical reproductive system.

Nature is full of evolutionary selflessness. From deep-sea octopuses to certain marsupials, there are animals and insects that reproduce and then die, as their lives can be cut short because they ...