Cow and Chicken: Information on the characters, multimedia and a "Save Our Show" page.
Cow and Chicken according to Wingnut: Detailed list of episodes.
Cow and Chicken Audioclips: About a dozen sounds of Charlie Adler performing his characters on "Cow & Chicken".
IMDb: Cow and Chicken (1997): Voice cast and review.
Pazsaz: Cow And Chicken: Voice credits and episode list.
The Red Guy and his Web Site: Web site of The Red Guy from Cow & Chicken cartoon
The Unofficial Cow and Chicken Page: Devoted to the famous cartoon characters of the Cow and Chicken cartoon. The page contains pictures and sounds.