Reasons for changes in dog coat color:

1. Natural growth and color change. The color of young dog hair is very intense, and it will also change color over time. As the dog grows older, the color of its hair will gradually fade.

2. The change in dog hair color is also related to the climate. For example, in summer, the color of dog hair will appear lighter than in winter.

3. The discoloration of the dog's hair may also be due to malnutrition. If there is a lack of nutrition, the dog's hair will become rough and dull, and the color will gradually fade.

Foods that are good for dog hair:

1. Cooked egg yolk: Egg yolk is rich in fat, as well as calcium, phosphorus, iron and other minerals , can supplement nutrition for dogs.

2. Carrots: The vitamin A in carrots plays a certain role in maintaining the shiny texture of dog hair. The vitamin B2 and folic acid in carrots have anti-cancer effects.

3. Olive oil: Olive oil can help dogs beautify their hair. In addition to beautifying their hair, it can also promote the development of their bones, nerves, and brains, and regulate their gastrointestinal tract.

4. Lecithin: The inositol rich in lecithin can effectively promote hair growth. If the dog often loses hair and the hair is dull, it may be a lack of lecithin. Appropriate supplementation can benefit the dog. Said it was necessary.