Derby the dog was born with deformed front legs, having some mobility but little hope of ever running until he was adopted by Tara Anderson. Anderson works for a project management team at 3D Systems, a company that lead the way in 3D printing and manufacturing solutions. The company decided to build Derby prosthetics legs through the 3D printing process so he could run and have a better quality of life. Now, he runs miles with his prosthetics and inspires people all over the world. This video will touch your heart.