Like other animals, when we’re young and healthy and natural selection is in full force, we are eager to make friends and find a mate even if that comes at a cost.

A small group of silver-backed chevrotains, tiny deer-like creatures, has been photographed in a Vietnamese forest after an intense search. By Stephen Leahy November 11, 2019 ...

We know this because, since 1974, researchers have diligently recorded the births of red deer like her and caught, weighed, and marked every calf they could get their hands on — about 9 out of ...

We know this because since 1974, researchers have diligently recorded the births of red deer like her, and caught, weighed and marked every calf they could get their hands on—about 9 out of ...