Physical setup: My “comfy chair” in front of a bay window; blackout curtains over window (often closed, especially early morning, since the window faces east); my cat uses my chair (and me) as a stepping block to enter the bay (curtains in the way? Nope. She doesn’t care *heh*); new puppy—all nearly 40# of him, now—on my ottoman staring over my notebook at the bay window my cat has just disappeared into. . . seriously puzzled look on his face: disappearing cat?!?