101 PET, meaning "embracing the pet lifestyle with 101% enthusiasm," is a multifunctional space integrating pet boarding, pet grooming, and social retail. With the new developments in pet-keeping trends and the upgrading of urban pet consumption patterns, the needs of pet life have extended to emotional attention, making pets gradually become emotional companions within the family. Informal Design follows the scale of pet life and the interactive experience with humans, providing an alternative for urban pet living. It creates a natural and comfortable home away from home for pets. 101 PET employs a simple, bright, and practical design approach, focusing on a high-quality life for pets while aiming to create a more relaxed and comfortable lifestyle for both pets and their owners. The overall structure is divided into two levels: the first floor is designated for pet retail and grooming, while the second floor serves as a pet hotel and activity space. At the entrance, a portion of the space is left open, allowing sunlight to stream through the glass curtain wall and illuminate the entire area. The walls of the upper-level pet activity zone feature large floor-to-ceiling windows, enabling customers to see pets playing upstairs. This design enhances spatial interaction, creating a novel and unique experience. Additionally, staff on the second floor can view the first-floor activities through the glass, effectively improving work efficiency. A large central support column serves as the main structural element of the building, supporting the entire second-floor platform and organizing the overall space around it. To mitigate the imposing presence of the column, we designed a flexible "bridge" structure display rack that wraps around the column. Using dog leashes and leash locks as cable structures, the pegboards can be retracted to function as wall display panels, transforming the space into a temporary event venue. When the pegboards are opened and lowered, they form a bridge-like display table. Following the principles of "pet-friendliness" and "sustainability," 101 PET employs a combination of marine plywood, resin grilles, and metal profiles to design a series of modular fixtures. These custom fixtures provide the space with a high degree of integrity and flexibility. By incorporating various metal components, the fixtures can adapt to different display and presentation needs. They can be moved, changed, and combined continuously to accommodate a variety of event scenarios. Natural birch marine plywood is selected as the primary material for the space, with its fine, natural wood color simulating the comfort and coziness of a typical home, enhancing pets' sense of security. Extensive use of off-white artistic paint creates a warm and bright spatial ambiance, while green resin grilles are cleverly used as structural symbols within the space. These different materials layer and complement each other, creating a harmonious and inviting environment. 101 PET is not just designed solely for "pets"; its underlying significance is to create a more interesting, loving, and warm lifestyle for both pets and their owners.