This daily feast-and-famine cycle in oxygen availability created an intense physiological challenge for early animals, forcing them to develop adaptations to handle fluctuations in nutrients. For ...

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.

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 ...

Animals have some amazing adaptations that help them live in ... If they didn’t enter torpor at night they would die, since their bodies would lose too much heat due to their large surface area to ...

Mouse lemurs are forest dwellers that live in female-dominated groups of up to 15 animals. They spend most ... aloft during the day and forage at night for insects, fruit, flowers, and other ...