AngelKitten - Weasel - could climb walls. Specifically, door frames - and when she was younger, she didn't leave claw marks. She'd been declawed (front only) very young. I remember the first time husband brushed his teeth in my apartment, looked over, and spit toothpaste everywhere because she was eye level. She managed to make it to the top and hang horizontally at least twice.
She decided early on that human furnace husband was her furniture. And she LOVED peas (the weekend before she passed, I have a video of her eating peas at the table).
She learned that "ONE" meant to get the %^&* off whatever she was on - and the threat "Vietnamese food" (no offense intended to anyone) meant she was in SUPER trouble. She mostly stayed off counters and tables while we were present.
Since she has been gone, Possum has become more loving, and will scramble onto the bed (high bed + nearsighted tubby tabby = humor) as we're getting ready to sleep for his evening "fishy" (cat treat). Squirrel has taken over using people as furniture.
Squirrel also adores water. I've multiple pictures of her and husband's feet in the shower... And she's hopped in the bath with J.
The cats did not really like O... But... Shrill screaming a lot of the time will do that.
They're smart... Possum is an exceptional mouser. Squirrel, not so much... She brings them in as gifts (and moths, spiders and crickets, too)... Alive. Possum dispatches them before he brings them to us. Doesn't eat them, just breaks their necks and brings them in. Ewww.
