You'll know a fox squirrel when you pick it up. they look like squirrel-zilla.
click at your own risk... there's some squigglies showing on this pic:http://farm3.static.flickr.com/2595/4069219267_de26e21420.jpg
that's a LARGE red fox squirrel laying next to my marlin 882SSV. if youve seen one of these rifles you will understand just how large this guy is.
I saw his bigger brother today in my treestand. If legislation ever goes to vote to allow a 22lr pistol while archery hunting, i'm voting "HECK YES". those little tree-ninjas tormented the heck out of me today. one came right up my tree and i whacked him with the nock of my arrow. he jumped down and read me my miranda rights.