The discoloration of a dog's nose may be caused by too hot weather, malnutrition, genetic factors, aging, disease, injury, allergies, etc. Treatment should be based on the dog's own condition. If it is caused by genetics or aging, it cannot be changed, and it will not affect the dog's health. If it is caused by other reasons, the dog needs to be exposed to more sun and supplemented with trace elements and vitamins.
