Peanuts is a syndicated daily and Sunday American comic strip written and illustrated by Charles M. Schulz. The first strip was four panels long and showed Charlie Brown walking by two other young children, Shermy and Patty. Shermy lauds Charlie Brown as he walks by, but then tells Patty how he hates him in the final panel. Other notable characters include Snoopy's friend Woodstock, a bird whose chirping is represented in print as hash marks but is nevertheless clearly understood by Snoopy; three of Woodstock's buddies who usually appeared when on a scouting trip with Snoopy as their scout leader; Pig-Pen, the perpetually dirty boy who could raise a cloud of dust on a clean sidewalk, in a snowstorm, or inside a building.

Tweety (also known as Tweety Pie or Tweety Bird) is a fictional yellow canary in the Warner Bros. Looney Tunes and Merrie Melodies series of animated cartoons. Despite the perceptions that people may hold, owing to the long lashes and high pitched voice of Tweety, Tweety is male. This is established several times in the animated series The Sylvester & Tweety Mysteries, and in the film-short Bad Ol' Putty Tat when Sylvester tries to trick Tweety using a fake female bird. On the other hand, a 1951 cartoon was entitled "Ain't She Tweet." Also, his species is ambiguous; although originally and often portrayed as a young canary, he is also frequently called a rare and valuable "tweety bird" as a plot device, and once called "the only living specimen"