Derby the dog was born with a congenital leg deformity, which sucks, but he was also adopted by a woman with the power to 3D-print him custom prosthetic legs. So that’s pretty awesome.

Tara Anderson adopted the dog, who was born with very small forelegs and no front paws, last year. Watch Anderson, a project manager at a 3D printing company, describe the process of helping Derby run on all surfaces for the first time in his life: