When my American Short Hair (7 years old, slightly underweight if anything) jumps up into her cage (about 70 cm or so off the floor, or leaping over a metre from the adjacent cat tree) when she knows it's time for food, after turning round to look for the food almost every time she'll shake a front paw (always, I think, the right) for just a second or less.
There's no extra actions like licking the paw or looking at it or looking sorry (although impending meals probably override that reaction!), but I just worry she might have rheumatism or some other age-related disorder. She's never been very active, and in normal activity I don't notice anything. Or am I just worrying too much as it's just a habit she's got into?