The Mus musculus is widely distributed around the world.

A light shower occurred in the park, and the children were delighted.

My pet hedgehog is very cute.

A hedgehog is a nocturnal animal.

He was surprised to find a mousehole.

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

A rat came out in the garden.

The rat stole my food.

My pet is a Mongolian gerbil.

The vaquita is an endangered species and the most rare marine mammal in the world.