Chewy has a chronic upper respiratory disease that among other things, makes her sleepier than most cats. And as I am sure most of you know, cats sleep a lot to begin with!
We can always tell when Chewy is feeling good as she spends the entire afternoon trying to climb on to people as they come to pick up their dogs.
If you stand too far from the counter she lets you know she wants you to come closer by raising her paw as if to wave you over.
So if you don't want a cat on your shoulders, beware the waving paw!