I came across this American red squirrel (Tamiasciurus hudsonicus, Sciuridae) a couple of years ago in a floodplain forest. It seemed surprisingly unafraid of me…a little cautious, but it didn’t take off up a tree as I approached. I can only speculate that it was perhaps sick (though it seemed pretty spry), or perhaps more likely it was unaccustomed to humans. It just kept going about its business, keeping one eye on me.
Apparently it’s important to include “American” in the common name, since there is a “red squirrel” of a different genus common in Eurasia (Sciurus vulgaris, Sciuridae).