スミソニアン国立動物園のインスタグラム(smithsonianzoo) - 3月28日 03時46分

❤️🐘 An elephant has six sets of molars throughout his/her life. As each tooth is worn down, the front pieces break away and the next tooth pushes forward—like a conveyor belt! An elephant often goes through its first three sets as a juvenile, leaving the final three sets to last the remainder of its life. 📰 Read all about Asian elephant Swarna's successful tooth radiograph training! KEEPER Q&A: https://s.si.edu/2VFmYxH. (Link in bio.)

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