In Norway we only have the red ones. Shy small things that run to climb up a tree when you approach. You're lucky to see one.
I saw the grey ones first time when I visited Oxford. Students were sitting in the grass, and a hundred squirrels just ran around in-between them. Very different creatures indeed.
Why? They want their millitary officers to stay racist, so it's easier for them to adopt a "us and them" mindset?