Bulldogs, both English and American, are single-coated breeds with a smooth, short coat that lacks an undercoat. However, even without an insulating undercoat, this breed sheds moderately year-round, so regular brushing is required to manage loose hair. Also, they may be more susceptible to extreme heat or cold, since there is no secondary coat to regulate their body temperature. At Lillian Ruff, we provide dog shampoo for single-coated breeds, such as Bulldogs.