Yes, corgis do shed, and they are considered heavy shedders. They have a thick double coat made up of two layers of fur, which causes them to shed all year round. The shedding is particularly heavy during seasonal changes, usually in spring and autumn, when they "blow their coat" to transition between their winter and summer fur. Factors such as diet, allergies, stress, and hormonal changes can also affect the amount of shedding. Because of their heavy shedding and dander, corgis are not hypoallergenic. Regular grooming and brushing can help manage the shedding.