Here's why:
* Nocturnal: Active primarily at night.
* Diurnal: Active primarily during the day.
Animals that are active both day and night are usually described as crepuscular, which means they are most active at dawn and dusk.
However, some animals may exhibit cathemeral behavior, which means they are active at irregular times, both day and night.
It's important to remember that these terms are not always absolute. Many animals have flexible activity patterns and may shift their activity based on factors like food availability, temperature, and predation pressure.
