And, just in time to prove that even after a thousand posts there are still plenty of breeds I haven’t seen yet, there’s this guy. According to Wikipeida, Podengos are Portuguese dogs that come in three distinct sizes. The large ones were bred for hunting boar and deer, and the medium and small ones for rabbit hunting.
(Sorry if the pictures aren’t quite up to my usual admittedly flexible standards: I ran into this guy in a store, but I can’t resist putting him up just to increase my rare breed tally!)