While for the human being, darkness is a real disadvantage in which we are barely able to distinguish a silhouette, for many nocturnal animals the night becomes a world full of details, shapes and colors. How can some animals see in the dark? What will happen at night so that certain animals have evolved to live in the dark instead of during the day?
The general hypothesis suggests that animals become nocturnal to avoid the multitude of other animals active during the day. This way they have less competition to get food and less predators.
Night animals have the ability to see at night because your eyes are adapted to compensate for the lack of light. All eyes, whether nocturnal or not, depend on the photoreceptors of the retina to detect the particles of light, known as photons.