I used to live in westfield mass and they officially are infested with BLACK squirrels. they are much smaller than gray squirrels, but much more prolific and apparently more aggressive since they took over so quick. Supposedly they were imported from scotland for someones garden or a park or something and then spread... whoulda thunk they could do that???

I am with Gandalf, however, on the distaste for the tree rats. They eat the birdfood, leave a huge mess when done, and do a lot of damage. And my good for nothing old dog (god rest his happy soul) wouldnt kill them. He would catch them, run around for about 20 minutes with them in his mouth, then set them down to take a drink or pant and away they would run. Useless dang dog... But I miss him. Looked like a fox, only bigger.