The harbour porpoise is a small dolphin that lives in the cold sea areas of the Northern Hemisphere.

The lemming is a characteristic small mammal of the Arctic region.

We set traps to kill the mice in the house.

We started killing rodents in the house.

We lit a bonfire of dried reeds by the lake and gazed at the starry sky.

In order to cook delicious food, it is important to adjust the strength of the fire properly.

It's my role to light a fire at the camp.

Slash-and-burn agriculture, known as 'Kita', is an ancient farming technique that involves burning forests to create new farmland.

The wildfire burned down the entire forest.

The fire bell rang at the Zen temple, and everyone began to gather.