Hi, My one year old german shepherd has a lot of dandruff. I can only see it when i ruffle his hair up the opposite way, but there's a lot. He has had allergy problems in the past, but he seems to have gotten better. He is eating Canidae, and has fish oil and vitamin E everyday. Is there anything i can do to rid him of his dandruff? Another thing is that every morning he has big green eye boogers...what could be causing those??