My 18 month old cocker spaniel sometime through out the day coughes and throws up on occassion. It started in the morning he has been around 1 or 2 other dog? I am feeding him nutro lamb and chicken, and I give hime water in the morning and evening. I was bathing him once a week and was told to stop it was too much. He mostly throws up in the morning. What could be wrong woth him? Some time he won't even it in the morning when I put his food dowm

Is he being sick after drinking? You really should leave him water down at all times and not limit his water intake to mornings and evening, or have I read that wrong?

Yes and sometimes through out the day he vomit its always clear like water or mucus

Sorry, I am still not clear if your dogs has a constant supply of drinking water? Assuming that he does not then when he drinks large quantities of cold water in one hit, it will return the minute it hits his tummy. When he is sick at other times during the day, is it yellow frothy bile or clear mucus?

its clear muscus