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.

The French Bulldog is a mammal of the Carnivorous order, family Canidae, and genus Canis. Originating in France, its ancestor, the English Bulldog, crossed with other local breeds of dogs in France and eventually became the French Bulldog. The Chinese bulldog is known for its brave and fearless personality, often engaging in fierce battles with opponents. In addition, French bulldogs are also very friendly, honest, loyal, and persistent, friendly to children, and show a strong curiosity for new things. The French bulldog was once popular worldwide for its comical appearance and was also one of the strongest breeds of bulldogs. Later, when bullfighting was banned in France, it became a companion dog.