Is it normal for puppies to have dander on their bodies?

The skin of a young dog with more flakes may be caused by the following reasons: first, due to a long time without bathing, the skin is relatively dry, causing flakes; second, caused by parasitic infections on the body surface, such as mange mites, wormy mites, etc., causing itchy skin and a lot of flakes; third, caused by fungal skin infections, resulting in the destruction of hair follicles in dogs, causing such symptoms. It is advisable to consider a skin examination to see if any of these causes are present.