Fella and/or Ursula?
That's something that's always stymied me - it's strongly intimated that there are two identical redheaded jungle-babes in the show. Referenced in the theme lyric -"Then away he'll schlep on his elephant Shep, while Fella and Ursula stay in step...", played three times in the show no less; in the main title, the George-specific title, and the end title, all with animation of a pair of Janes to George's Tarzan.
And in the cartoons themselves? One girl. George may refer to her as Ursula, or Fella, or Ingrid, or Max, but he never implies that there's more than one of her up in the treehouse. What's up with that? Were they doing this to put us into a state of bewilderment and disorientation on a level with George's?