Variations: Arborexusta stridens (Tryon), Tree-squeak
Treesqueaks make a whole variety of sounds, including vocalizations that evoke the wind in the trees, a cougar’s whine, a piglet’s squeal, and firecrackers at a wedding. These critters of the northern woods are small, prehensile-bodied, and can change color to match the tree they’re on. They look like weasels and are about as friendly as weasels.
Unexplained noises are always the work of a treesqueak.
Tryon, H. H. (1939) Fearsome Critters. The Idlewild Press, Cornwall, NY.