Here is a classic you might like: a video about a small dog (not sure what the breed is) squaring off with a cat. It is a pretty funny video:
By the way, there seem to be plenty of variations of these kinds of videos about dogs playing with cats (seems to happen with just about any breed). My dogs never lived around cats, so I would be curious to see how they would react with them, especially my golden retriever, though I have seen him chasing after cats sometimes (though the cat usually gets away). By the way, how do your dogs react around cats?