OAP's lunch time... for more than one species!

A fish and chip lunch is a bit of an institution for the pensioners of the town in which I work, and they sit in the park with their meal when the weathers' good. While I had my lunch I was joined by an OAP squirrel, who I fed peanuts. I've learned you can tell when a squirrel is old because they move slowly, they tend to be much slimmer than the others, more hunched-over and they move stiffly and their eyelids flicker slightly as if they are wincing from the pains of something like arthritis! But their tails seem to get bushier as they age. I probably spend too much time looking at squirrels...