Frantic Squirrel

I spend the day at a most enjoyable class, making Artist's Books and during our lunch break I suddenly spotted a squirrel running down the wall into the courtyard and begin an assault on an old piece of black canvas that was laying there. Once he succedded in tearing away a large piece he disappeared again the way he had come up the wall. What could he possibly want with this? No idea, but it was a lot of fun to watch.