Reader Karen says:

We're babysitting a friend's dog and the fireworks empowered him to bend open the metal gate latch and escape. Older, large black short-haired dog with white chest markings and a somewhat knobby head (in a good way.) Friendly, answers to Hobbes; last seen approx. 10 PM Monday night along El Molino between Calaveras and Mariposa. If found or seen, please hold and/or call Karen at 626-296-2051 or Gary at 626-590-9056. Thanks very much.

UPDATE 9:30 PM: from Karen:

Thank you to Mike on Catherine Street.  Hobbes the Wayfarer was found safe and sound, 'tho a bit rattled, in a local backyard about 5:00 this afternoon.  Karen and Gary are working on improving their fortifications.