What you do your cow have small piece of placenta what you do?

Keep an eye on the cow - if she starts getting sick (running a fever, off feed, dehydrated or decreased milk production) call your veterinarian immediately and tell him the placenta may be retained. Otherwise, some cows take up to 7 days to completely clear the placenta. The important part is don't pull on the placenta hanging out of the vulva. Ripping the placenta makes it more likely a piece will end up left inside where it will rot and cause infection and problems.