Sasha has been on wild venison for all of her life and exclusively for several weeks. We suspect she has a food sensitivity that causes itching. A month ago we added pork to her diet and that went well. Three days ago I gave her some ground beef. In three days she has had three meals, once per day, of the ground beef and now she has new dandruff. She did have loose stools the first day, but I expected that. Nothing else in her diet or environment has changed. Is dandruff an ok reaction to a new meat or should I exclude beef again?