He is working at the ministry.

He works at the Ministry of Health, Labour and Welfare.

He belongs to the defense force.

He is learning karate for self-defence.

He is the best defender of our team.

The North American beaver is a large rodent native to North America.

The wood duck is a very beautiful bird.

The American bison is a large mammal native to North America.

An American alligator can move very quietly underwater.

The American bison is known for its size and strength.