Oggie has developed some really dry skin. Looks like he has dandruff all over. I had to give him a bath recently and I didn't have oatmeal shampoo, that might have contributed to it. I'm afraid it might be because of Canidae though, I've read others have had that problem. He loves that food though and I really think it's one of the best, I'd rather not switch. What can I do? Will brushing him more often help?