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. Floppy ears are covered with long fur, and the heavily furred tail is carried curled over the back. The coat may be of any color, though white and with blazes of grey are frequently seen. A very noticeable feature is the underbite, which is required in the breed standard.
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