In 1989, paleontologist Darren Tanke suggested that similar breaks were the result of mating as one dinosaur mounted the ...

Male bonobos have an impressive ability to detect when females are most fertile, even though the usual visual cues are ...

New research shows male bonobos use subtle, hidden cues - not just swelling - to track a female’s fertile days with surprising accuracy.

Researchers observed beetles across 200 generations and noted that evolution was amped up when strong sexual selection was ...

When it’s time for turtles to find love, the process isn’t something most people get to see. But it happens like clockwork every year. Whether it is a massive loggerhead in the sea or a common ...

Marine science history has been rewritten as a threesome of leopard sharks were spotted in New Caledonia engaging in what can only be dubbed as a "threesome" during a swift mating session. This ...

But not so fast — National Geographic says that it's possible that the lighter-maned lion is actually a female (albeit an unusual one): The lion on the bottom is more than likely a female African lion ...

A video of what seems to be two male lions mating has gone viral with over a million views, reminding us that same-sex relationships are entirely natural — in fact, they occur in nature all the time.

Tarantula mating season is here — and if you're in the Southwest, you might see hordes of these fist-sized spiders marching across the landscape. From late summer through fall, male tarantulas emerge ...

Berhampur: The mating season of Olive Ridley turtles has begun near Rushikulya river mouth in Odisha’s Ganjam district, as ...