More on Spartan Dog from Infoplease:

• Spartan Dog - Spartan Dog A blood-hound; a blood-thirsty man. O Spartan dog, More fell than anguish, hunger, or ...
• William Shakespeare: Othello, Act V, Scene II - It is the cause, it is the cause, my soul,— Let me not name it to you, you chaste stars!— It is the cause. Yet I'll not shed her blood; Nor scar that
• Dictionary of Phrase and Fable: S - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "S"