There are some telltale signs when a mare is getting close to foaling. Several days before the mare will “bag up”. In other words, they begin lactating and the udder will fill up, the teats will wax over and may even start dripping milk. Her behavior will often change as she becomes more uncomfortable. She may become more irritable, pace, break out in a sweat frequently, breathing may change, and they may raise their tail on and off.
Several hours before foaling a mare may exhibit the following signs:
Nervousness
Pacing
Frequently getting up and laying down
Sweating
Tail swishing
Pawing
Lose of appetite
Frequent urination
Leaves the herd
Kicks at belly
Acts irritable and looks generally uncomfortable.
When you see these signs, stay close by. You should plan on spending the night at the barn. Baby is on its way.