We just brought home a 7-week old GSD and he has a wonderful temperament but he hardly eats at all during the day, vomited once (on the first full day that he was home), and has had nothing but diarrhea and urine come out of him. He also sleeps about 90% of the time during the day. We have been trying to feed him the same type of puppy food that he had been eating at the breeder's but he has not been interested in it. He only wants to drink water and has eaten a few bites of cooked chicken or turkey but after a few bites he looses interest. He just had his first set of shots a few days ago when we first got him so could that be the problem? We can feel his ribs and hip bones and we are worried that he is too skinny for a puppy. We are first time puppy-parents by the way ;) Hopefully this is just a phase?