Kito will bark and jump around and run like crazy (depending on which one he has to do), or simply stand by the door silently. Abbey goes when we go out, but doesn't really tell us. She's had 2 accidents lately though, so she really needs to learn a signal. She scratches at the door sometimes, but last night she didn't do anything, just went over, peed, and went to sleep in the corner.
We'll have to work on her.