Another Emily quirk we don't miss (much): No one ever explained to her the difference between sinks and fountains.
Emily used to mostly hang around upstairs, an orbit for her final months that mostly consisted of the bed, Katherine's desk and futon, the sun deck in my office, the litter-box, and the bedroom water fountain. In particular, she tended for some reason to use the litter-box, and then head immediately for the fountain, wiping her paws on the edge before drinking.
No wonder the upstairs fountain always seemed dirtier.
I blew off washing the fountains over the past month, and when I got around to them, they were still cleaner than after a couple of weeks of Emily use.
(At the same time, while I wrote this my third monitor has had a picture of Emily asleep on the office futon. Pity I can't rub her ears for her...)