Get a rare close-up look at the elusive aardvark, one of Africa’s most fascinating and secretive nocturnal animals. From its long snout and powerful claws to its curious behavior, this intimate ...

World of Darkness, the Bronx Zoo’s “groundbreaking” shadowy attraction showcasing more than two dozen rare and unusual nocturnal animals, is back after a 16-year hiatus.

Better control of nocturnal blood pressure and improved circadian rhythm seen with bedtime versus daytime dosing.

World of Darkness, the Bronx Zoo’s “groundbreaking” shadowy attraction showcasing more than two dozen rare and unusual nocturnal animals, is back after a 16-year hiatus.

And the concept is the same: to use a reverse light cycle, giving visitors a peek into the lives of nocturnal animals that are generally active while humans sleep.

Many animals are most active at dusk and dawn. Others are primarily nocturnal. That first break of sunlight finds the overlap between late-moving nocturnal animals and those that require daylight.

Feeding wild elephants might seem kind, but a new study by researchers at the University of California San Diego warns that it can lead to serious harm.

Close your eyes and open your ears…You are a Powerful Owl, dozing in the hollow of a gum tree. Twilight is descending. Close your eyes and open your ears…You are a Powerful Owl, dozing in the ...

Texas floods devastate, claiming dozens of lives and impacting wildlife. Learn how you can help victims, human and animal, navigate the crisis.

Thousands of fans have flocked to a Thailand zoo to celebrate the first birthday of Moo Deng, the baby pygmy hippo that's become a social media sensation.

Another reason red pandas weren’t right for the job? They are nocturnal animals, meaning they spend most of the daylight hours asleep and are awake at night.