Nowadays, People love their pets as much as loving their kids. With the fast change in the industry, population structure and the growth of the Internet makes people become more and more unfamiliar with each other. The increasing loneliness leading people to keep a pet with watery eyes and one-hand body. It’s the best placebo in this strange society. Looking back at the histories of dogs, People chose a healthy, active and strong dog for supporting humans activities like hunting, guarding, transporting and grazing...etc. As nobles in Middle Ages indulged in hunting, the social status of hounds soon skyrocketed. On the other hand, tiny, cute puppies were also found in old paintings as a decoration and a company for the upper class. Such situations keep continuing to nowadays, people keep dogs with cute faces, watery eyes and tiny bodies instead of strong and active dogs. What they really need in this city jungle is a spiritual commitment; a puppy can release their tense during work, a puppy can make them smile. Dogs can be seen in many art works. For example, As you can see from the paintings in ancient and modern, there’s always a dog accompanying people by their side or the main character of the work. For example, the painting of Madame de Pompadour and her black curly hair puppy by Francois Boucher. The hound staring and accompanying the host in Thomas Gainsboroug’s work Mr. and Mrs. Andrews. There’s even a dog room full of the portraits of the dog in Lobkowicz Palace, Prague. Starting from the 19th centry, people are affected with the trend of purebred and dog competitions. Mix were abandoned due to their “appearance condition.” What if the purebred didn’t have the superior appearance condition ? Will people still love them? It’s just sign of social class and another kind of vision of this world. The thesis include 6 chapters. Chapter 1 : by describing the emotional attachment of people and dogs to bring out the research motivation and purpose - conditions of humans to raise dogs. Chapter 2 : from the close relationship between humans and dogs to trace back trends as well as humans desire and expectation toward pure breed. And discuss the dogs in the artworks. Chapter 3 : elaborate the concept of works. The strong attraction of dog’s appearance led to people’s favor of pure breed and Mix. And extend to humans’ strong desire and intervention toward dog’s appearance. Chapter 4 : Media, techniques and features. Chapter 5 : Work description Chapter 6 : Conclusion