Vietnam is one of the main producing areas of cat excrement coffee, which is rich in wild Asian brown bird resources. Secondly, Vietnamese coffee producers have formed a complete production process after years of experience accumulation and technical improvement, which ensures the quality and taste of cat excrement coffee. In addition, Vietnamese cat excrement coffee enjoys a high reputation in the international market and is considered as a unique and precious coffee variety. Therefore, it can be considered that the cat excrement coffee produced in Vietnam is authentic.