Jake (5) is the store dog for a UPS store down on Chestnut Street, in the Marina district of San Francisco. He will help you with your packages (especially if they contain food), and is always very snappily dressed.
I’m always a little leery around chihuahuas, but Jake and the one I just dogsat (pictures soon) are slowly winning me over.
See the tail blur? Even when the rest of him was still (rare), his tail was wagging enthusiastically.