Owls are nocturnal animals, they are active at night.

I made new friends in the Seiya chat room.

The tapir is a nocturnal animal, mainly active at night.

The baku is a spirit that eats nightmares.

We headed to Kyoto by night bus.

We traveled to Kyoto by night bus.

He was trembling in fear of the night parade of demons.

Education about sex is very important.

We participated in the local cleaning activity over the weekend.

He mainly eats vegetables.