Tokugawa Tsunayoshi (February 23; 1646 - February 19; 1709) was the fifth shogun of the Tokugawa dynasty of Japan. He was the younger brother of Tokugawa Ietsuna; thus making him the son of Tokugawa Iemitsu; the grandson of Tokugawa Hidetada; and the great-grandson of Tokugawa Ieyasu. He is known for instituting animal protection laws; particularly for dogs. This earned him the nickname of 'dog shogun'.