The end title of each episode evolved with each season. The first season has Courage holding up a scribbled end title card; the second and third seasons have an ornate sculpture of a bowing Courage; and the final season has a CGI Courage taking a bow.
In the opening credits, the show is introduced by the Nowhere Newsman on the TV in the Bagges' home. Eustace, who is upset that the show makes him look bad, switches off the TV and promptly scares Courage.
At the end of the closing credits, we hear Eustace say "Stupid dog!"