The reasons why Border Collie sheds hair in winter:

1. If Border Collie is infected with parasites and is bitten by parasites, which damages the health of hair follicles and skin, it will lead to It sheds hair and needs to be dewormed regularly.
2. If the Border Collie is malnourished, it will also cause hair loss. In addition to feeding dog food, it is also necessary to regularly feed some vegetables, fruits, meat and other foods to ensure balanced nutrition.
3. If the Border Collie consumes too much salt, it will also cause hair loss. You should avoid feeding the Border Collie food containing salt.
4. If you bathe the Border Collie too often, hair loss will occur, so you need to reduce the frequency of bathing.
5. If the Border Collie is allergic to food, it will cause skin itching, accompanied by hair loss, and it is necessary to seek medical attention in time.
6. If the Border Collie is bathed with human shower gel for a long time, it will also cause hair loss. Please use pet bath products to bathe it.
7. If the Border Collie is in the reproductive period or lactation period, loss of nutrients will also lead to hair loss. Pay attention to giving it more nutrition.