Lots of SPP activity today, thanks to everyone for helping me out.
Garfield by Paws, Inc.
The Humble Stumble by Roy Schneider
Monty by Jim Meddick
Pickles by Brian Crane
Red & Rover by Brian Basset
Non Sequitur by Wiley Miller
And some variations on the theme:
Red & Rover is actually a silent double.
And Dog Eat Doug uses a silent antepenultimate panel.
If my tricorder readings are correct, Non Sequitur may be the all-time SPP champion.
I'll need to run the data through the ship's computer to verify. That may take some time.