Derby the dog runs with the help of 3D printing

Friends, I have endeavored to develop a carapace to protect me against Inspiring Dog Videos of any kind on the internet. You can tell me I won't believe what happens next and I will — oh, you cried at 1:43 or whatever, but not I.

Yet I can't resist this cute story of Derby the Dog, born disabled, who was given custom 3D printed prosthetics that allow him to run for the very first time. Maybe because all of the very serious science and design stuff that is going on in the video. Yeah. I'm here for the serious science and design stuff.