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.

The animal kingdom is incredibly diverse, and it is said that there are still species that have not been discovered.

The animal kingdom is known for its diversity and complexity.