Pavlov the Pug Dog was interviewed by Rhonda Rat in the "Siberian Tiger & Reindeer" episode of The Animal Show. He appeared again in "Pelican & Flamingo." The character's name is a reference to the famed animal behaviorist Ivan Pavlov, who was particularly known for his conditioning work with dogs. Pavlov was recycled from an extra Dog City puppet and has appeared in background crowd scenes in The Muppet Christmas Carol and The Happytime Murders. He was reworked into Piddles for Puppet Up!.