Why dirt-eating goats never need to visit the dentist | Strong Teeth of Goats

For goats, a side dish of sand and dust is the normal accompaniment for a hearty meal of grass and plants. But despite their constant chomping, goat teeth never seem to wear down.

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https://www.sciencemag.org/news/2019/06/why-dirt-eating-goats-never-need-visit-dentist?utm_campaign=news_daily_2019-06-24&et_rid=541171757&et_cid=2874252