When our late Poindexter was around, I would let him out the front door whenever it was raining in order to keep him from wandering out toward the street, as the rain would keep him along the side of the house, under the eaves. In good weather he'd be let out the back door.
After awhile he figured the back door was the way to good weather, and so he'd becomed really cheesed when he found foul weather outside both doors. He'd mutter things he wouldn't say in polite company. And hiss, too.
While Poindexter was around, he and Nekochan were an item, and though he's been gone over six years, Nekochan will pause by his favorite shady spot by the driveway, seemingly in contemplation, to this day.