These little squirrel-like creatures inhabit the trees of New England, living on berries and fruit. Since their skin is bark-colored, they're almost impossible to see. In addition, they wrap themselves tightly around tree-trunks, concealing themselves further. But they're quite easy to hear. Walk around in the woods and it's almost impossible not to notice their high-pitched cries. When a strong wind is blowing they get especially excited and squeak at each other even more loudly. At such times, the locals are fond of saying, "The tree squeaks are making quite a racket today." Tree Squeaks are usually quite placid and pose no threat to humans. However, after extended dry spells they have been known to become aggressive.