My Male Sneakers (2.5 yo), just comes up in front of me, sits, and gives
a very slight whine. That's when the Doggy Door is not open (8pm-8am).
He uses this tactic for other things besides Potty, and is capable of
waiting the whole time before My Female Becca (10 mo) arrived.
She has not yet established a definite "action" to gain access to outside
and IF things go as usual, she'll start doing the same thing that Sneakers
does. I just can't praise Sneakers enough, when it comes to teaching
Becca about stuff. Sorta monkey see monkey do, it's saved me SO
much trouble !
But, before Becca arrived, there have been times when I have not
immediately responded to his request, and he would just lay down
and wait. Then try again in a while. However, given Becca's
inability to last as long as Sneakers, I have been a lot more attentive
about it. Better that than the Mop !