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.

He is the type of person who understands ten from hearing one.

Anthropozoonosis, or animal-derived infectious diseases, have the potential to spread between humans and animals.

He is exactly in the state of 'A frog in a well does not know the vast ocean.'

He spoke of his big dreams, saying, 'How can a sparrow understand the ambitions of a swan?'