Here is a breed of dog native to Japan. I forget what this particular breed is called - I think it's an Akita?
Over in Shibuya station, there's a statue celebrating one very famous Tokyo dog, Hachiko. Here's the story of Hachiko:
Hachiko used to accompany his master, Professor Ueno, to Shibuya station every day. Then one day, Professor Ueno passed away. Hachiko continued going to the same station to wait for his master every day, however, until his own death 11 years later.