Chihuahua is a carnivorous mammal in the family Canidae, also known as a teacup dog, Chihuahua dog, etc. Chihuahuas are widely distributed around the world. Intelligent, lively, clingy, vigilant in action, with a tenacious will, very brave, and even possessing certain hunting abilities. Chihuahuas are the world's smallest pet dog breed and one of the oldest breeds in the world. As early as the era of the Inca Empire, it was the inviolable dog of the Holy Spirit in people's minds at that time. In 1923, the Chihuahua Dog Club was established in Mexico; The dog club was established in the UK in 1949.

Haba dog is one of the ancient dog breeds. According to research, it is highly likely that it originated from the same ancestor as the Beijing dog and is an ancient Eastern dog breed. As early as the Han Dynasty, Haba dogs and Chinese silk flowed into foreign countries through the Silk Road. Due to being domesticated by humans for a long time, I am very close to humans. Haba dogs are originally from China. Some people believe that it is a hybrid of Western breed dogs and bulldogs. But the world believes that they are the brothers of Chinese sand dogs, and there is no way to verify them. Some foreign books suggest that the Haber dog was produced in England or the Netherlands. Therefore, it is also known as the Dutch Axe Dog or Dutch Dog. Many dog experts believe that the dog was brought from China to England and the Netherlands.