In Season 37, Herb was featured as the main character in episode 4113 (when he gained his name and back-story). It is revealed that Herb is the only dinosaur left except, of course, for his cousin Shirley. While on Sesame Street, he meets many new people and learns something new from each and every one of them. Herb becomes good friends with Slimey.
Herb has also appeared in several Word of the Day segments, including with Amy Ryan (in season 43), Ginnifer Goodwin (season 44), and Ice Cube (season 45). In the latter, he appears as a baby dinosaur, showing the puppet in its actual size.