We have now seen this little animal curled sleeping in a tree 2 evenings in a row. Both times we were unsure exactly what it could be. It looks like a raccoon but its colouring and markings are off, mainly, there Are no markings. The fur appeared reddish even in the dull overcast light we saw it in both nights.
We tried several searches for small mammals in Ontario, and ruled out Martens, etc. which made no sense anyway as the fur is course, long and raccoon like and the animal is not long and sleek.
Truly, we feel it is a leucistic or piebald raccoon. I hope that I can find it awake one day on a walk in the area it is, to see its face, and confirm this.