Causes of dry and dry hair in dogs:

1. Some dogs are genetically inherited. Dogs’ dry and rough hair is inherited from their parents.

2. Excessive bathing of dogs will also cause the hair to be damaged, bifurcated and rough, and the surface of the skin may become dry and itchy.

3. Insufficient nutrition of dog hair will lead to dry and rough dog hair.

4. If the dog stays indoors for a long time and has less exposure to sunlight, it will also cause the dog's hair to deteriorate.

5. If your dog eats too much food that contains too much salt and oil, it will cause dry and rough hair.