Nocturnal animals have developed special traits that help them live in low light. Here are some of the main ways they’ve adapted:

1. Better Senses:

   • Vision: Many nocturnal animals have big eyes with many rod cells. This helps them see better in the dark. For example, owls can see in light that’s $100$ times dimmer than what humans can see.
   • Hearing: Animals like bats have amazing hearing. They use a method called echolocation to find their way and catch food in complete darkness.

2. Body Changes:

   • Metabolic Rate: Nocturnal animals often have slower metabolisms. This helps them save energy during the night. For instance, the African black-footed cat only hunts at night to conserve energy.

3. Behavior Changes:

   • Activity Patterns: Nocturnal animals mostly move around at night when there are fewer predators. In fact, about $30\%$ of all mammals are active at night, showing how common this behavior is.

These special traits are important for their survival in dark environments.