 Why don't we, let's reverse the behavior. Okay, obviously the cat's upset because you're taking the dog out. And so what we need to do is make the cat think that something great's going to happen to the cat when you do take the dog out. So perhaps maybe there's a favorite treat or toy you can give to the cat before she reacts to the dog going out. This way she associates the dog going out with something positive versus the dog getting away with something that she's not getting to do.