This customizable prosthetic system addresses the growing need for pet mobility aids. Current options often lack comfort and fit, especially for aging or injured dogs. Using 3D scanning and multi-material printing, it provides lightweight, modular support tailored to each animal. Dogs regain mobility and confidence, while owners feel relief. With quick-swap pads, wheels, and terrain parts, plus recyclable TPU and local printing, it delivers sustainable, scalable, and empathetic pet care innovation.