When Ruthie isn't sleeping or hunting from the safety of a window, she's in Devil Cat mode. Jumping out from behind walls to attack me, hauling from room to room, her paws literally squealing as she corners. All with ears flattened and eyes wide open, just large black disks. Recently she's taken to attacking my bed, randomly pouncing on folds, then launching off the side to run under the bed, and back on top. Here she is in all her glory last night: