Sadcat meows at the backdoor, but is hesitant to step back outside. I've done this test multiple times now - he sniffs for a minute then comes back in.

It's a screened-in porch, and I make sure both doors are latched shut (one to outside, one to the garage) before I try this out with him. Once Spring comes, I wonder if he'll be interested in chilling on the porch. If so, there will be another new rule for the house: "No porch access except from inside the house when Sadcat is out there. Also, no leaving Sadcat unattended on the porch." There aren't many rules at my house, so I make the few that are present very well known to my visitors lol.