Here's the REAL reason Sylvester left the Right-Hand Box Tent yesterday:
After Felix scaled the box tent that Salem was occupying, he realized Sylvester saw him, under the other box. Thus the rapid turnaround and exit. Those two have quite the game of "Creepy Staring & Stalking" that they play every day, even if only one of them wants to play it.
Do you see Sylvester in the last frame, by the ottoman?
He slithered out of his tent to stalk Felix!
XX The Lounge Kats XX