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Tooth regeneration in crocodiles

Crocodiles have 24 sharp teeth on each jaw, which are meant to grasp and crush, not  to  chew.  The  teeth are continuously replaced during a crocodile’s lifetime. Each tooth is hollow, and a new tooth grows inside the old one in order to be ready once the old tooth is lost. Young crocodiles can replace their teeth at a rate of one new tooth per socket each month.

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