He is an expert in ethology, and his research is highly regarded worldwide.

He is studying about ancient animal worship.

Cnidarians are a type of marine life, including jellyfish and corals.

We went to the petting zoo on the weekend.

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.

The ecosystem of zoobenthos is an important field of study in marine biology.

I'm so busy with work, I could use all the help I can get.

There is a proverb, 'a cornered rat will bite a cat,' which means that a person driven into a desperate situation will fight back even against an opponent they would normally fear.