Severe hair loss in dogs may be caused by a variety of reasons. First of all, seasonal hair shedding is one of the common reasons, and there is usually a lot of hair loss during a specific season. Secondly, malnutrition, such as a lack of certain key nutrients, can lead to compromised hair health. Too much salt in the diet may also cause hair loss. Furthermore, parasitic infections, such as lice, fleas, etc., can affect the health of your dog’s skin and coat. Skin diseases, such as fungal infections, eczema, etc., can also cause severe hair loss. Endocrine problems, such as thyroid dysfunction, may affect hair growth and loss. Stress and anxiety may also cause hair loss. Additionally, certain breeds of dogs are prone to hair loss themselves.

If the hair loss in dogs is severe, it is recommended to take the following measures: observe whether there are other abnormal symptoms, such as red skin, Itching, etc. Make sure your dog's diet is balanced and provides adequate nutrition. Deworm your dog regularly. Keep your dog's skin clean and bathe him properly. If you suspect a skin disease, take your dog to a veterinarian promptly for diagnosis and treatment. Reduce dog stress and provide a quiet, comfortable environment. Carry out appropriate care based on your dog's breed and coat characteristics.