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.

The giant burrowing cockroach is known as the world's largest cockroach.

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?'