Very mild dandruff on a black dog is probably nothing to be concerned about. Even a few white flecks against a black backdrop are going to stick out. But generally speaking, you’re not supposed to be able to see dandruff scales on your pet. Normally, as millions of cells in the top layer of skin—the epidermis—are renewed every three to four weeks (just as in people), the old ones slough off upon dying. It takes place microscopically and shouldn’t be viewable.
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