
An adult 'small dog' with a puppy sighthound would be the best choice. That way the sighthound grows up knowing the small dog is in charge (especially if you got a small bitch and a sighthound male).
That said, some sighthounds are more predatory than others, and if your small dog was a very feisty snappy bossy dog, its highly possible (and has happend to working lurcher owners i know) that the sighthound will one day get fed up.
Exercise caution, dont leave them together (as i never EVER leave my cat alone in the same room as my saluki x) and it can work.
Let your little dog grow up to be a pain, and your sighthound have very little discipline, leave them alone together and you could come home to a bloodbath.
Em