He kept a room of the house just for the cat(Door closed at all times) . And worked witheach dog one at a time for a week or so. Then he worked with 2 dogs at a time (And so on and so forth) Of course this took course over a few weeks, but it was SOOOOO worth it! Eventually they all coexsisted in peace
There may be more to it than that, Ill ask him next time i see him
.. But i think you can make it work if you really wanted it to , Especially with all the cat experts on this bord to help you!