Character Analysis
Frank's an alien living on Earth disguised as a pug, and it sort of makes sense. Pugs look nothing like wolves. They barely look like dogs. It's possible that all pugs are really aliens in disguise.
Conspiracy theories aside, Frank provides Jay and Kay with information on the bugs, Arquillians, and the Galaxy. Thanks to Frank, Jay's able to solve the riddle of Rosenberg's last words.
Now if you'll excuse us, the office dog, Bilbo Puggins, is watching us with knowing eyes.