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.

I avoid eating animal products.

He is deeply involved in the animal liberation movement.

Protozoans are single-celled organisms.

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

There was a major outbreak of foot-and-mouth disease in Japan in 2000.

He learned about unguligradism in his zoology class.

Thanks to his serendipity, we were able to find a new business opportunity.

In mathematics, it is important to examine the parity of numbers.