Definitions by Sensei Maru

Nyo Nyo 

The Japanese word for the sound a cat makes.

kono neko wa nyo nyo ga iirutta.
that cat said "nyo nyo."

Nyo Nyo by Sensei Maru February 15, 2004

Wan Wan 

The Japanese word for the sound a dog makes.

kono inu wa wan wan ga iirutta.
that dog said "wan wan."

Wan Wan by Sensei Maru February 15, 2004