Animals have fascinating sleeping patterns adapted to survival. Dolphins sleep with one eye open, giraffes get about 20 ...

Science explains that cats are crepuscular animals.This means they are most active at dawn and dusk, which is related to ...

There are some animals that only come out at night and they are called nocturnal animals. Woo. Woo! Who do you think these eyes belong to? Owls. Owls have big eyes to help them see in the dark.

"Their eyes are the animal world's equivalent of night-vision goggles." Quentin Martinez/Getty Images The tarsier is a genius in the dark thanks to its enormous eyes Geoff is the science lead on a ...

The presence of the tapetum can be observed at night when a pair of glowing eyes reflects back a flashlight or some other light source. (Interestingly, different animals have different color ...

This is a rarity in primate research, and illustrates just how much remains to be known about these fascinating animals ... during the day and forage at night for insects, fruit, flowers, and ...

Visitors can expect to see animals like the Arabian sand gazelle and the majestic southern white rhinos, which are particularly active at night. Kennedy Gitonga, a Kenyan tour guide, noted ...