The robotic pet, such as Sony's Aibo, has become a popular form of entertainment and companionship for people who cannot keep real pets.

Judo, a martial art that emphasizes throws and grappling techniques, was developed in Japan in the late 19th century and has become a popular sport around the world.

The Japanese dormouse is a small nocturnal rodent that is endemic to Japan and is known for its long, bushy tail.