A week ago we got a 8 week old puppy from a breeder. He's a GSD, at first he wouldn't eat, he is now after trying a lot of different foods. All he does is sleep and mopes around the house. The breeder states he had all the shots but we needed to take him to the vet in 4 weeks for the boosters???? He mopes and is not at all playful almost like he is depressed. Any ides on what to do? This is the first pup we have ever had that acts this way?