Zanoits are a dangerous type of microscopic organism featured in Adventure Time. Each year, they kill off hundreds of thousands of Plantoids, which produce mellotoxins that would otherwise kill the Zanoits.
Ricardio discusses the subject of Zanolts with Princess Bubblegum to demonstrate his scientific knowledge. Ricardio poisons Finn and Jake the Dog with them.
One noticeable effect they can have on other organisms is rendering them unconscious, as Finn and Jake are completely incapacitated by the Zanoits until they are saved by Princess Bubblegum.
- They were once misspelled as "Zanoids" in the online Adventure Time game "Sound Castle".