In King Lear, William Shakespeare makes a list of the hierarchy of dogs:
Mastiff, greyhound, mongrel grim
Hound or spaniel, brach or lym,
Or bobtail tike or trundle-tail
A near-identical list appears in Macbeth.
It turns out, however, that the source for this list may be a book by George North entitled A Brief Discourse of Rebellion and Rebels written in 1576.
was discovered thanks to anti-plagiarism software commonly used to check up on college and high school student essays.
** Shakespeare's Polar Bear
** Shakespeare in the Park