There are two ways that Pong Pong shows that she has to go out.
1. She sits and stare either at you or the door. It has to be a proper sit because she only does those at will. No noise is required since you instinctively feel a set of glaring brown eyes on you.
2. Scratching the door. This is a sign of ‘I REALLY HAVE TO GO’. It usually occurs when she has the runs or it’s been a while since MOM YOU FORGOT TO TAKE ME OUT.
I thought about teaching her to ring those bells you put on the door knob if she has to go.. but I’m afraid she’ll use it every 5 minutes because she can.. Plus whenever someone opens the door and it rings, she’ll think it’s time to go out.