Sea Otters' Strong Teeth Are Similar to Early Humans'

For sea otters, a trip to the dentist is no sweat.

The protective enamel on their teeth is more than twice as strong as humans’ enamel — but it wasn’t always this way. Long ago, scientists say in a new study, early humans’ teeth were just as strong as sea otters’ clam-crunching pearly whites. And this finding could be a key to understanding our earliest ancestors’ dietary habits.
Chipping Teeth
Tooth enamel in most animals is comprised of tiny prism-like crystals clumped together to form

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