Max left his school backpack on the dog couch, and yes it's really the dog's couch. By giving them their own couch they stay off of the rest of the furniture.
Anyhoo, big bulky bag on the couch and Dell decides that it would make an excellent pillow. Never mind all the hard books inside, Dell had found his comfy spot. And there Dell stayed until Max moved his backpack in order to do his homework.