American Idols have small dogs too!

[sxesven]

I don't think that any similarity between Ayu and someone else means that either one is copying - just because Britney Spears owns a puppy dog, it doesn't mean that she has one because Ayu has one. Furthermore, the whole puppy dog thing has always been very much alive in Japan. I remember seeing a documentary on it. For many Japanese women their puppy dogs are like children. It's not a trend that Ayu set.