Life's journey is not to arrive at the grave in a well preserved body but rather to slide in sideways totally worn out, shouting Holy Crap, what a ride! Now to just convince Doodlebug of this!
I've seen that before on little tykes. I even had a cat, Sophie, that stayed with us 6 months before we found her a good home, and she had a snaggle tooth. Gives your dog that seasoned look of "don't mess with me or I'll grind your leg off".