The brown rat was digging a hole in my garden.

My pet gerbil is very active.

This bacteria multiplies exponentially.

Brown rats are often seen in urban sewers.

The kangaroo is a species native to Australia.

Tetsu is my best friend.

There are many beautiful temples in Kyoto.

This room is divided by a wall.

Terbium is one of the rare earth elements.

Ytterbium is one of the rare earth elements.