Endangered leopard sharks have been observed mating in the wild for the first time, with scientists witnessing a “threesome” involving two males and a female. The encounter was filmed by Hugo Lassauce ...

Humans have caused wild animals to shrink and domestic animals to grow, according to a new study out of the University of Montpellier in southern France. Researchers studied tens of thousands of ...

Males engage in a two-week-long sex marathon with as many females as they can find. Each frenzied encounter can last up to 14 ...

For some animals, reproduction comes at the ultimate cost—their own lives. While this may seem extreme, it's a natural strategy to maximize reproductive success. These species invest everything into ...

In world-first footage, researchers have captured a wild black-coated jaguar mating with a spotted jaguar deep in the Brazilian Amazon. The big cats are notoriously elusive, hence this latest ...

The short answer is no, rabbits and hares can't cross breed, says Sheena Harvey. There are many reasons why animals with ...

When it comes to animals romancing in the wild, things get weird—really weird. Some animals offer bizarre gifts, some put on daring dances, and others? Well, let’s just say things get really messy.

Scientists are concerned that the H5N1 virus could set off another human pandemic. But it is already putting species under pressure in the wild. By Emily Anthes Every spring, more than 200,000 ...