Animals like rabbits, house cats and deer are neither nocturnal nor diurnal. Instead, they're crepuscular. Jaymi Heimbuch is a writer and photographer specializing in wildlife conservation ...

Nocturnal species and Diurnal species -- The reef becomes a very different place at night because all kinds of animals come out when the sun goes down. There is a whole different undersea world ...

This is called nocturnal behavior, and it’s common among many animals. They become more active at night to hunt, mate, or avoid heat and predators. How do animals see in the dark? Nocturnal ...

For example, diurnal animals are busy in daylight, while nocturnal animals are active at night. Crepuscular creatures use the transitional light of sunrise and sunset.

Examples of nocturnal animals include aardvarks, bats and owls, according to Active Wild. The opposite of nocturnal is diurnal. Humans, who function mainly in the daylight, are diurnal.

They tend to sleep at night and lay low during midday. This differs from animals that are nocturnal or diurnal. Read on to learn why this is an efficient way for them to live and what local ...

Unlike euchromatin, the gene activation of heterochromatin is low. Between nocturnal and diurnal animals, though, the differences in nuclear architecture get bigger -- especially around the retina.

Most animals are tucked up asleep ... A short video about the significant differences in adaptations between nocturnal and diurnal creatures. The two groups take different approaches to stealth ...

Light-sensitive cells in the retina come in two main types: rods and cones. Rods are used for vision at low light and cones for color and bright light. A study in the September issue of the ...