It does! Shirley has had 6 foals (this is her 7th) and all were very typical. Now she is throwing the book out the window. The white mare, Carmel who was due yesterday has a very large bag, puffy vulva, mucus/bloody discharge, no foal movement, off her feed, major attitude changes, tested 6.4pH yesterday. But her bag just doesn't seem ready. Then my Shetland mare, Angie is now over 2 weeks past her due date and is JUST STARTING a bag. This is her second foal and she was a rescue so I have no history other than she did have a bag when she foaled.