Bloodhounds are known more for their noses than their ears, although apparently the ears help concentrate the scent toward the nose.
Benedict Arnold was a Revolutionary War general who originally fought on the American side but switched allegiance to the British. As commander of the fort at West Point, he tried but failed to hand it over to the British army.
In the U.S. his name is synonymous with the word "traitor," but Phoebe doesn't care about that - only that she has the biggest part!
Annapolis is the capital of Maryland, where the U.S. Naval Academy is located.