^That must be it. Cats like to be either on top of things, surveying, or underneath/inside things, hiding out.
"Junior" is going up and down the stairs on his own and coming out of hiding for a slightly longer time each day.
We discovered today, after cooking up some ground beef, that Junior has a vertical jump of about 4 and a half feet, as he jumped straight from the kitchen floor into the sink. He could smell the pan; it's a good thing we didn't set it in to soak, or there would've have been one hell of a splash.
So.......no leaving food on the counter from now on.