This is Flynn. His mom, Sylvia took the dog sweater workshop at Windy Knitty, and look! A perfectly fitting sweater! The yarn used was Noro Kureyon, a perennial favorite of mine. I understand that Sylvia is working on a second sweater. Hooray for a wardrobe.
The pattern is available on Ravelry, the Madeline Basic 4.5. Named for my little muse.