The reasons why black dog hair turns yellow:

1. Genetic inheritance: The yellowing of black dog hair may be due to genetic inheritance. The hair color is not obvious when young, but it turns yellow with age. The owner does not need to worry, as scientific feeding can prevent the hair from turning yellow and getting serious.

2. Improper diet: Improper diet may cause uneven hair in black dogs, so the dog’s diet should be adjusted in time and do not feed food heavy in oil and salt.

3. Moulting period: Black dogs’ hair may turn yellow during the moulting period, and it will turn black after the moulting period.

4. Malnutrition: Yellowing of dog hair may be caused by malnutrition. It is recommended that owners supplement their dogs with appropriate amounts of lecithin, seaweed powder, minerals and other nutrients.

5. Improper hair care: Frequent bathing or using human shower gel to bathe the dog will also cause the dog's hair to turn yellow. It is recommended to replace the shower gel with pet shampoo in time, and pay attention to 1- Bathe your dog once every 2 weeks.

6. Older age: Older dogs will have their hair turn yellow. While supplementing the dog's nutrition, you can choose some hair-beautifying products for the dog.

7. Too little going out: The yellowing of a black dog's hair may be due to too little going out. It is recommended that the owner take the dog outdoors to exercise more and let it bask in the sun more.

8. Lack of trace elements: If a black dog’s coat not only turns yellow, but sometimes even loses hair, this may be due to a lack of trace elements in the dog’s body. You can give the dog some food containing trace elements. dog food.