Aww, little Higgins is growing up so fast!!! Funny he learned to sit from a stranger. I love to see those victory laps, it's so funny to see a Yorkie running at full sprint when they are happy (or sometimes before they need to poop). Higgins will learn to poopy in the right place soon I bet, sometimes it just takes them a bit of time, maybe he needs another sit-down pow-wow with Mom and Dad in a week or two. Cute story, Higgin's Mom.