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zachw055 t1_j6kdr6e wrote

Reply to comment by Redpandaling in TIL When a cow has opposite sex twins, the female twin is usually born intersex and infertile. This happens because the twins blood supplies are linked, which exposes the female to male sex hormones. by awawe

What is considered a significant distance?

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Redpandaling t1_j6khfvj wrote

Uterus => heart => lungs => heart => uterus

And of course it's mixing with blood from the rest of the body the whole way

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