We have two gray squirrels in the yard that look normal except for the tails. Both have rat-like tails, that is, non-bushy but about the right length. One has a little fluff near the rump, the other none.
They might be just a little under-sized compared to the rest of the herd (or whatever you call a bunch of squirrels) but otherwise only the tail is odd.
This is a heavily wooded suburb in northwest Cook county. Any idea what we are seeing?