Morning tearjerker: This pup will melt your heart with his adorable smile and 3D-printed legs by Molly Brown on December 18, 2014December 18, 2014 at 10:07 am How’s this for a heartwarmer? Derby the dog, born with deformed front legs, gets a new set of 3D-printed prosthetics and can now run and play like never before. The… Read More