Invertebrates are a type of creature without a skeleton.

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

His tribe has been practicing zoolatry since ancient times.

He is studying about ancient animal worship.

He is deeply involved in the animal liberation movement.

We went to the petting zoo on the weekend.

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

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

He is an expert in paleozoology and has a deep knowledge about the ecology of dinosaurs.

He has a deep interest in paleozoology.