《搜神记·卷六》
汉昭帝的时候，昌邑王刘贺看见一条大白狗戴着祭祀宗庙时乐人所戴的方山冠却没有尾巴。到熹平年间，宫禁之内给狗戴帽子、佩带印绶，将此作为娱乐。当时，有一条狗突然跑出来，奔进司空衙门，看见这情景的人，没有不惊奇的。
至熹平中，省内冠狗带绶以为笑乐，有一狗突出，走入司空府门，或见之者，莫不惊怪。
During the reign of Emperor Zhao of Han, Liu He, the King of Changyi saw a large white dog wearing a square mountain crown worn by musicians when sacrificing to the ancestral temple, but without a tail. During the Xiping reign, it became a form of entertainment in the palace to put hats on dogs and give them official seals. At that time, a dog suddenly ran out and rushed into the Sikong's office. Those who saw this were all amazed.