The Pin Tzu breed is not a pure breed dog. Sometimes called hybrid or designer breeds. They are developed from a cross between half Miniature Pinscher and half Shih-Tzu breeds. While the Pins originated is a German breed the Shih-Tzus were of the Chinese descendants.
Even though they are small in size, they make great watchdogs as they are alert, courageous and loyal to their humans. They make a good human companion as well as with other pets. As long as they are kept balanced by a human pack leader, they will remain happy, balanced and stable dogs.