I changed the mattress cover on our bed last night, and the old one is on the floor waiting to go down to the trash (I know, I'm lazy). Herbert is cuddling it like a teddy bear. I guess it smells like us. Anyway, I just heard tapping coming from the room, and got up to see what it was. She's wagging her tail in her sleep. It's just going around and around in circles. Like sleeping with this dirty old mattress cover makes her the happiest little doggy in the world.