"Food Chain" is the seventh episode of the sixth season of the American animated television series Adventure Time. The episode was written, storyboarded, and directed by Japanese anime director Masaaki Yuasa in cooperation with creative director Eunyoung Choi, and guest stars Regular Show storyboard artist Minty Lewis as Erin the caterpillar.
The series follows the adventures of Finn (voiced by Jeremy Shada), a human boy, and his best friend and adoptive brother Jake (voiced by John DiMaggio), a dog with magical powers to change shape and grow and shrink at will. In this episode, Finn and Jake learn about the food chain after being turned into its different parts—small birds, big birds, bacteria, plants, and finally caterpillars—by Magic Man (voiced by Tom Kenny). As Finn and Jake journey along the food chain, they meet another character named Erin, whom Finn falls in love with and attempts to marry. The episode concludes with Finn and Princess Bubblegum (voiced by Hynden Walch) singing a song about how the food chain works.
The episode was the second (following David OReilly's fifth season installment "A Glitch Is a Glitch") in the series to have been directed by someone not affiliated with the series. On the night that it aired, "Food Chain" was watched by a total of 1.97 million viewers. The episode received largely positive reviews from critics, and was nominated for both an Annie Award and an Annecy International Animated Film Festival Award.