There are animals which are needed by humans, the Hitsuyo na Doubutsu.

There are those animals which are needed by humans, the Hitsuyou na Doubutsu. This category includes three basic types of animals. There are those domesticated as food sources for humans. There are those both wild and domesticated which have entertainment value for humans. There are those at least a few of which must be preserved in order to perpetuate the fantasy that humans have not overpopulated the earth.