Top definition
A Shih Tzu which has turned to the Dark Side of the Force. Since they are highly intelligent, mischevious and arrogant anyway, this is but a small step. Many Shih Tzu look like small hairy versions of Yoda anyway.
"That... that .... er ... dog ? life form ? what ? has just stolen my mobile phone from my jacket pocket and hidden it under the sofa !"

"Sorry, he's a Sith Tzu..... he can't resist being evil."
by Eighth of seven April 02, 2008
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