He is deeply involved in the animal liberation movement.

We went to the petting zoo on the weekend.

Echinoderms are a type of marine life, many of which have star-shaped bodies.

The characteristic of annelids is that their bodies are divided into ring-shaped segments.

Invertebrates are a type of creature without a skeleton.

He is studying about ancient animal worship.

His tribe has been practicing zoolatry since ancient times.

Coelenterates are said to be the first animals with a true body cavity.

As the name suggests, onychophorans are a unique group of animals that have claws.

He has a deep interest in paleozoology.