Roundworms are an important part of the soil and contribute greatly to the health and fertility of the soil.

He is a world-renowned zoologist.

My pet is a dog.

I avoid eating animal products.

Protozoans are single-celled organisms.

As the name suggests, chordates are a group of animals that have a notochord.

He is deeply involved in the animal liberation movement.

We went to the zoo with our family on the weekend.

Ruminants have the characteristic of re-chewing food after swallowing it once.

His tribe has been practicing zoolatry since ancient times.