This rear-support dog wheelchair is engineered for small and medium dogs with hind limb mobility challenges, including paralysis, arthritis, post-surgical recovery, or age-related weakness. Its fully adjustable frame accommodates variations in height, width, and length to match individual anatomy, fitting breeds like Dachshunds, French Bulldogs, and Corgis. The breathable mesh harness wraps securely around the abdomen to distribute weight evenly and reduce strain on the spine and hips. A rear U-shaped opening enables natural elimination without disassembly. The lightweight yet durable frame uses reinforced plastic connectors instead of standard welded aluminum joints, enhancing structural integrity. Equipped with wide, tall, shock-absorbing wheels, it handles grass, sand, gravel, and hard indoor surfaces smoothly. Assembly requires no tools and takes minutes, with intuitive screw-based adjustments and a built-in D-ring for leash attachment. Designed for daily use, it supports rehabilitation, indoor exercise, and outdoor exploration while maintaining comfort and stability over time.