Reasons for dogs not growing hair:

1. Lack of nutrition: Dogs are malnourished or have unbalanced nutrition, which can cause health problems and hair loss, and even affect hair growth. Therefore, owners need to feed their dogs some foods that are good for hair, such as egg yolks, salmon, beef, etc., to supplement the nutrients needed for hair growth.

2. Skin problems: Dogs are usually infected with fungi or bacteria and cause skin diseases. This will make the dog unbearable itching and scratching its body with its paws. After the infection, the hair of the affected area will also be affected. If it cannot grow, the pet owner needs to feed and care for it in time.

3. Improper bathing: Frequently bathing your dog or using improper toiletries will cause a lot of hair loss, so you should reduce the number of baths and use dog-specific shower gel.

Note: If there is no skin disease or the hair does not grow for a long time, it is best to take the dog to the pet hospital for examination and treatment.

4. Hormone problem: It may be a hormonal problem, especially hypothyroidism, which may cause hair loss. You can take thyroxine orally, and the hair will grow slowly.

5. Parasites: Parasites will cause dogs to lose hair, so owners should deworm their dogs in time.

6. Trauma: If the dog suffers severe trauma or burns, and the hair follicle layer of the skin is severely damaged, the injured area will not be able to grow hair.

7. Excessive stress: Dogs that have been mentally depressed for a long time will cause hair loss, so you need to comfort your dog more.

8. Lack of sunlight: A dog’s hair that lacks sunlight will be dull and dull. It is necessary to take the dog to bask in the sun more, which can eliminate bacteria on the body to a certain extent, and can also promote blood circulation and reduce hair loss. The amount will be a lot and it will become shiny.

9. Eating too salty: If your dog eats too salty, it will easily cause hair loss. Owners should not feed their dogs food that is too salty. It is best to feed them light and low-salt dog food.