If your puppy is trying to get over something, then he would sleep more, I would think, just like we do when we get sick. We have to sleep more because our immune system is fighting something off.
Also, I noticed our 6 mo. old babygirl sleeps more if she's not eating enough. As soon as she eats a plateful of food, she immediately perks up again. But she naps several times a day for 1-2 hours each time. |