Diplodocus114 t1_j6lwve9 wrote
Reply to comment by SteerJock 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
We had heifers and bullocks here. Both referring to young cattle not yet suitable for breeding. The bullocks were sent for slaughter.
A female was then called a 'cow' once she had a calf and deemed suitable for milking.
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