Mastodon vs Mammoth, what's the difference? 🦣🦣🦣 One difference is their teeth! Woolly mammoths (Mammuthus primigenius) had large, flat teeth that worked like a cheese grater. This is because mammoths grazed on grasses. 🦣🦣🦣 American mastodon (Mammut americanum) teeth had deeper grooves and cusps, better for grinding down leaves and tree bark. 🦣🦣🦣 Want to learn more about ancient ice age animals? Visit Planet Ice: Mysteries of the Ice Ages, until September 5. 🦣🦣🦣 Book your ticket at na