スミソニアン国立動物園のインスタグラム(smithsonianzoo) - 5月25日 23時44分

Oh, my...What orange teeth you have! Beavers have long incisors that get their orange color from an iron-rich protective coating of enamel.
Their teeth grow continuously throughout their life, but daily use helps trim them down. Their incisors have a chiseled shape, which helps beavers cut through hard objects like wood. Visit beavers Chipper and Birch on American Trail!

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