What animal has no teeth at all?

Animals That Thrived Without Teeth

When we think of mammals, teeth usually come to mind—fangs, molars, incisors. But evolution has taken some creatures down a different path. Surprisingly, several animals have done away with teeth entirely, adapting in remarkable ways to survive without them.

One of the most striking examples is the baleen whale. These ocean giants, part of the Mysticeti suborder, include species like the humpback and blue whale. Instead of teeth, they use baleen plates—made of keratin, the same material as our fingernails—to filter tiny shrimp-like animals called krill from the water. Their entire feeding strategy revolves around this filter-feeding mechanism, making teeth not just unnecessary, but a hindrance.

Then there are the pangolins—shy, scaly mammals found across Africa and Asia. With no teeth at all, they rely on long, sticky tongues to lap up ants and termites. Their stomachs are specially adapted with keratinous spines and swallowed stones to grind up their prey, essentially turning their stomachs into gizzards.

Similarly, anteaters—members of the order Edentata, whose name literally means “without teeth”—have taken the same path. The giant anteater, silky anteater, and tamandua all lack teeth entirely. Like pangolins, they use powerful claws to rip open insect nests and extend their tongues deep inside to feed.

These animals prove that teeth aren’t always essential. Through clever adaptations, they’ve carved out successful niches in nature—without a single tooth in sight.