The reason why the dog's hair turns white and red is because the dog's hair follicles are inflamed, causing the dog's white hair to turn red. It may also be that the dog's white hair is dyed.

Many parents who raise white dogs will find that their dog’s white hair gradually turns red. This may be because your dog accidentally came into contact with red things while playing outside and was dyed. Just need to clean it. If it's not for this reason, it could be that your dog has a skin disease that damages the hair follicles, causing the hair to turn red. I believe that many parents who raise white dogs often encounter this kind of thing, because this kind of dog is prone to skin diseases, the whole body looks red, and the white hair looks like red hair. Parents should not worry too much about this situation. Oh, as long as the skin disease is cured, the hair will return to its original color. There is another situation where hair follicles can be damaged, and that is allergies, so parents should know what their dogs are allergic to, and don't let their white-haired dogs turn into red-haired dogs accidentally.