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* Domestic animals normally eat the afterbirth.
 
* Domestic animals normally eat the afterbirth.
 
** Not the mare or camelids.
 
** Not the mare or camelids.
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* Expulsion of the foetus requires that the chorionic villi become dislodged from the crypts of the maternal side of the [[Female_Reproductive_Tract_-Placenta_-_Anatomy_%26_Physiology|placenta]].
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** Brought about by powerful vasoconstriction of arteries in the villi.
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*** Vasoconstriction reduces pressure and allows villi to be released from crypts.
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