It is a normal physiological reaction for a bitch to lose her hair after delivery. It usually occurs in 1 month and a half-3 months after delivery, usually in the back. The hair on the stomach will not change significantly. Vitamin and calcium tablets can be added to relieve symptoms. Can supplement vitamins. Calcium tablets, etc. This situation is mainly due to nutritional depilation caused by rapid loss of nutrition during breastfeeding. It is suggested that you supplement the bitch with nutrition during lactation, including calcium (low blood calcium can easily lead to postpartum paralysis), protein, vitamins, mineral salts, unsaturated fatty acids and so on. Hair removal is directly related to the lack of unsaturated fatty acids, please pay attention. It's like losing your hair. This is an abnormal reaction. You can try a shower gel containing tea tree oil first. See if there is any improvement. Tea tree oil can inhibit dandruff. Kill mites, etc. If it still doesn't improve. You need to see a doctor. Buy a special ointment for pets.