The typical fine, straight, and silky Shih Tzu coat has also been listed by many popular dog information websites as being hypoallergenic. In comparison with many other breeds, Shih Tzu do not shed to the same degree, only losing small amounts when bathed or brushed. It is the dog's dander and saliva that trigger most allergic reactions. Allergists do recognize that, at times, a particular allergy patient will be able to tolerate a particular dog; but they agree that 'the luck of the few with their pets cannot be stretched to fit all allergic people and entire breeds of dogs'. The Shih Tzu coat is said to fall out only when brushed or broken, or just said to shed. The coat may also be wavy or coarse.