The Treesqueak was described as a relatively small Critter that somewhat resembled a weasel or an opossum. It was completely covered in hair, possessed a long tail, long limbs, and had a reasonably friendly temperament, but would become aggressive if it went too long without mating. It also shared some of the abilities of a common chameleon. The Critter was able to completely wrap it’s arms, legs, and tail around a thick tree branch and blend into the bark so perfectly that it became almost invisible. This was how the Treesqueak spent most of its life, rarely seen on the ground and wrapped tightly around a branch.