Book-Ends: The first program (Sept. 13, 1969) and the last telecast on CBS (Sept. 4, 1971) featured the episode "Sappy Birthday."
Edited for Syndication: When this show played in syndication as part of the Fun World Of Hanna-Barbera package in 1977, the station in Atlanta, Ga. airing it (at the time independent WANX note now CBS affiliate WGCL) was owned by Pat Robertson's CBN outfit. To conform with their own broadcast standards, the hypnotism scenes from "Zilly's A Dilly" were cut out. Similarly, other episodes (of this show and others the station had) were trimmed to accommodate a local live-action host segment as well as due to elements that violated their broadcast standards.
I Am Not Shazam: Many people still call this show by its working name and theme song, Stop That Pigeon. Lampshaded in the Yogi's Treasure Hunt episode "Yogi's Heroes," where Dick and Muttley capture Snooper and Blabber and force them to watch old D&M cartoons, which Snooper called "Stop That Pigeon-type cartoons."
Name's the Same: Another Muttley followed this one, albeit with one "t" in the name. Mutley was the canine companion of journalist Doug McConnell (from KPIX/ch. 5 in San Francisco) whose children's series Mac & Mutley visited vacation spots and the extraordinary animal pets that lived there.