It's been a great first year, little-big dog!
Classic pose. She does doesn't ever want to stop, even when she's clearly ready for a break.
Like infants, dogs are usually only interested in a very small list of things. It's up to their humans to figure out which of those it might be.
Bailey has a buddy that lives just a few blocks away and is almost exactly the same size. That won't last long however. Elsie is 2 months younger and is already larger.