It may be seasonal hair loss. Most dogs will shed their hair in spring and autumn. It may also be that the Border Collie suffers from diseases such as folliculitis or eczema, or the dog has a large number of fleas, it is also possible that the owner uses human body wash or shampoo to bathe the dog, causing the dog to suffer from skin diseases.

Tips:

Owners should not feed their dogs too salty food in normal times, as this will cause their dogs to lose hair and make their hair rough, so they should regularly exorcise their dogs. To prevent worms, comb the dog's hair frequently, bathe the dog with a dog-specific shower gel, and blow-dry the dog immediately after bathing, otherwise the dog will easily suffer from skin diseases, leading to hair loss.