Those flowy lion mane locks don’t shed like most dogs, which means the double coat is considered hypoallergenic. Even so, it’s important to realize that no dog is 100% hypoallergenic since humans are allergic to the dander and saliva—not the fur or hair — which is just a mode of transport for the allergen. Their good amount of undercoat requires daily brushing in order to collect loose hair, which can tangle, and frequent trimming to keep to a manageable length. The Shih Tzu’s coat features different colors and patterns according to the AKC breed standard, including the popular black mask pattern on their face.