All dogs with impure breeds, impure bloodlines, and crosses of two or more breeds are called "Chun Chuan", or Chuan Chuan dogs, or straw dogs. Chuanchuan dog is Mix Dog, also known as Mix Dog in English. It is the largest dog breed in the world and can be found in every corner of the world! Regardless of whether they are Japanese, British or Americans, they all call Chuanchuan dogs ------------Mix dogs!