Reasons for severe hair loss in dogs:

1. Spring and autumn are the shedding seasons for dogs, and dogs will shed some old hair during the shedding season.

2. If the dog eats allergic food or is exposed to pollen, it will cause skin allergies and severe hair loss.

3. The presence of parasites such as fleas or mites on dogs can also cause severe hair loss in dogs.

4. Washing your dog too frequently will cause an imbalance in the pH of the dog's skin, which will in turn aggravate hair loss.

5. If the owner feeds the dog food high in oil and salt for a long time, it will aggravate the dog's hair loss.

Solutions to serious dog hair loss:

1. When bathing your dog, it is recommended to change the dog-specific shower gel, and the frequency of bathing should be controlled.

2. If the dog has severe hair loss, the owner can feed it some pet lecithin regularly to effectively beautify the hair and reduce the amount of hair loss.

3. To solve the problem of dog hair loss, owners also need to comb their hair every day to promote blood circulation and hair growth.

4. The owner can also change it to a hair-beautifying dog food, preferably one containing deep-sea fish oil hair-beautifying ingredients, which can supplement the hair with nutrients and relieve hair loss.

5. Owners can also take their dogs to bask in the sun more often, which can promote hair growth.