Scientists have documented same-sex behavior in many animals. Learn what it means, how it varies, and why human labels can mislead.

From spraying mates with urine to changing one's sex, these are the most intriguing courtships in the animal kingdom.

The Queen gets to tell everyone what to do, and she chooses a few males to breed with, we believe,” says Kerns. “However, she can have one of the largest litters of any mammals, over 30 babies at a ...

If you’d like to submit a question to the Outside/In team, you can record it as a voice memo on your smartphone and send it to outsidein@nhpr.org. You can also leave a message on our hotline, 1-844-GO ...

Antichinus are small marsupials - about 12cm to 31cm nose to tail - with soft fur, large eyes and a pointed snout, and live in forested areas of Australia and New Guinea. But don’t let the cuteness of ...

Both the UK and US Governments have pledged to end research using animals, but is such a goal realistic? And how might it change medical research? Talha Burki reports.

Nature does not reward politeness, and being a male or female doesn't change that rule either. Across the animal kingdom, the ...

Climate change is reshaping life on Earth at an unprecedented pace. Across the globe, species are shifting their ranges, altering migration routes and breeding earlier in the year in response to ...

Southern right whales are having fewer calves as sea ice shrinks. Scientists say this species may now be a warning sign of climate change.

Animals may not celebrate Valentine’s Day, but courtship rituals, pair bonding and fierce competition shape love in the wild.

The use of technology in agriculture has revolutionised farming practices globally over the last decade in efforts to improve ...

Toads have on of the most unique reproduction methods in the animal kingdom. Read here to learn about their sting eggs.