No, one dog will work fine, whether in rice, rosehedge, salt marsh, pine thicket, mountains, cactus, cedar, etc, etc, etc....
Don't need a little one for this and a big one for that... ha ha ha!
Size doesn't matter... a good dog will still get it done regardless.
Like I said, im not tryin to argue, i never said a thing about big or little......i was speaking in terms of the dogs individual use or purpose if you will.....not that it matters.