Richard has insisted from the beginning that they are nocturnal creatures.

Outside, the moon rose, and nocturnal creatures came out to seek their prey.

But they were safely out in the day and he did not believe that the nocturnal creatures would pursue them into the light.

They are nocturnal creatures and usually cruise during the twilight hours.

Against her thin face her brown eyes seemed large as those of some nocturnal creature.

It is a nocturnal creature and spends most of its waking hours looking for food in trees.

"Something new to cause such activity in these normally nocturnal creatures."

The nocturnal creatures also help to control insects that can spread disease to humans.

But even the most understanding parents are challenged by one change: their children have become nocturnal creatures.

There's no doubt a number of small nocturnal creatures about.