More on Bull-dog from Infoplease:

• Bull-dog - Bull-dog (A). A man of relentless, savage disposition is sometimes so called. A “bull-dog ...
• Bull-dogs - Bull-dogs in University slang, are the two myrmidons of the proctor, who attend his heels like ...
• bulldog: meaning and definitions - bulldog: Definition and Pronunciation
• The Dog, the Cock, and the Fox - A Dog and a Cock became great friends, and agreed to travel together. At nightfall the Cock flew up into the branches of a tree to roost, while the Do
• Luther Martin: Part XIII. Luther Martin — Letters and Other Works - LUTHER MARTIN, afterwards nick-named the bull-dog of federalism, was at this time the leading Anti-federalist in Maryland. From his pen came the pamph