If b12 is in meat and dairy where do the animals get it from?
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2From the intestinal bacteria as answered on [Biology SE](https://biology.stackexchange.com/questions/35786/why-do-humans-require-vitamin-b12-supplementation-while-herbivores-do-not). – Jan Dec 28 '19 at 11:10
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I'm voting to close this question as off-topic because this question was already answered on a different SE site. – Alexander Rossa Dec 28 '19 at 15:56