She's a blue Russian Dwarf Hamster, and is actually very clean. I clean her cage every 2 weeks but it's rarely ever dirty and never smelly.
![Wink ;)](./images/smilies/icon_wink.gif)
But every once in a while, if Sprinkles gets scared she'll sprinkle or tinkle on you.
EDIT: Yup, I've had rats before too
![Wink ;)](./images/smilies/icon_wink.gif)
But I disagree. Rats in my experience are way dirtier, but possibly because it's the size of the rat versus the tiny little dwarf hamster.