Felix Doubles for Darwin is a 1924 Felix the Cat cartoon, directed by Otto Messmer and produced by Pat Sullivan.
Felix is busy pacing around near a pond, hungry. Impatient, he quips “I’d give eight of my lives for a square meal!!” and shows his ribcage to the audience. Suddenly, a large fish pops out of the water and eyes Felix’s tail. It goes underwater to grab its fishing pole and bait (which Is a small fish) and tosses it ashore to lure Felix to him. Felix falls for it and grabs the fish, but gets dragged into the water as the big fish tries to eat him. Felix evades him and makes it back ashore, but is frustrated that he still has nothing to eat.