SubjectsAnimal FactsFactsIP FactoidsWeird Facts Tuataras cannot replace their teeth. By IP Factly - Dec 20, 2016 0 4 Share on Facebook Tweet on Twitter Image credit: Knutschie/CC0 Image credit: Knutschie/CC0 A tuatara’s teeth are connected to its jawbone and when lost, cannot be replaced. As a tuatara gets older, it has to eat softer food like earthworms and slugs.