Yes, porcupines are primarily nocturnal animals. This means they are most active at night and spend most of the daylight hours resting or sleeping. Their nocturnal nature helps them avoid predators and also allows them to forage for food like leaves, fruits, and bark under the cover of darkness, reducing the risk of being detected. However, it’s not uncommon for porcupines to occasionally be active during the day, especially in colder months or areas with minimal human disturbance.