Top paleontologists have discovered that mating between some species of prehistoric behemoths was so violent that they ...

A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan ...

Cassowaries are large, flightless rainforest birds from Australia and New Guinea, who are the third tallest and second ...

In truth, it is not a paradox. The animals involved all seem perfectly eager participants in heterosexual behaviour, as well, so their reproduction is not compromised. It is, though, a puzzle—for ...

Horseshoe crabs have survived 300 million years with little change. Their blue blood protects humans from bacterial ...

Finding a mate is hard in the animal kingdom! As these strangest animal mating rituals show, it sometimes gets even more ...

There were a lot of horrifying things in the news this year—a lot. But some of it was horrifying in a good way. Extraordinary medical cases—even the grisly and disturbing ones—offer a reprieve from ...

As the largest land-based animals alive today, elephants have few predators. Their size, strength and tightly knit social structures make adult elephants exceptionally difficult targets, but there are ...