In the latest comic from Yasmine Surovec at Cat vs. Human, we are presented with questions about cats. I think I may have the answers. The first one is easy -cats sleep on pizza boxes because cats sleep on all boxes, and the pizza box smells better than the others. Cats keep you company in the bathroom because while you’re sitting on the toilet, you have nothing better to do than to pet the cat, and they know it. As far as staring into a blank wall, I think they are just messing with us there.