When the show was syndicated as part of "The Funtastic World Of Hanna-Barbera" package in 1977, WANX/ch. 46 in Atlanta had the scene of Zilly being hypnotized and a later scene of Dastardly and Zilly being hypnotized cut out. WANX was then owned by Pat Robertson's CBN company and any presentation or reference to supernatural elements violated their programming standards. (WANX is now Atlanta's CBS affiliate WGCL.)
While Zilly was brave, he got irritated when Dastardly asked for him to translate what Klunk was saying.
Dick: Zilly, get back into formation. I'm still leader of this squadron.
Zilly: Go fly a kite, Dastardly. I'll shock it to that pigeon all by myself.
(Zilly runs Dick over in his haste to catch the pigeon)
Dick: A brave Zilly? I can't believe it.
Dick: I tell you, doctor, this guy is afraid of his own shadow. I want you to find out why he's chicken and cure him.
Doctor: Oh, that's a very common ailment. It's known as "frightola scaredy-cat-itis." And a cure is just a simple hypnotizement of the chicken brain cells.