Derby was born with underdeveloped front limbs, and although he was otherwise a healthy dog, that one difference nearly caused him to be put down. The young dog's original owners decided they didn't want him anymore, and he soon wound up at the Peace and Paws Dog Rescue shelter in Hillsborough, N.H. But he wasn't unwanted for long. CLICK HERE to read the rest of Derby's story on the DoDo website

Check out some of Derby's first video highlights below!

Keep in mind when you watch these videos that, up until this point, Derby got around by pushing off of his hind legs and sliding his chest across the floor or grass. These videos show him moving for the first time in his life. Get your handkerchiefs ready!