Here are some reasons why a dog's skin color might change:
* Allergies: Allergies can cause redness, itching, and even discoloration.
* Infection: Bacterial or fungal infections can lead to skin changes.
* Parasites: Fleas, ticks, or mites can cause skin irritation and discoloration.
* Hormonal imbalances: Certain hormonal imbalances can affect skin pigmentation.
* Sun exposure: Excessive sun exposure can cause sunburn and pigmentation changes.
* Underlying medical conditions: Some medical conditions, such as hypothyroidism or cancer, can affect the skin.
Please schedule an appointment with your veterinarian to have your dog examined. They will be able to determine the cause of the color change and recommend the best course of action.