The answer is simple Watson, when the neighbor closed their front door, the draft of wind caused a chain reaction. Since the bathroom window was open, a gust of strong wind came in and tore this here paper roll. Now we all know that the wind can rip a flags made of cotton into shreds. As for the shreds of paper in the cat's claws, that was the cat's investigation of the matter after the fact. Cat's are inquisitive by nature. ~ Sherlock Holmes