No...not all mares wax before foaling.
pregnant mares urine
pregnant mares urine
lactation
The leading stallion will breed with the mares
Three
Mares used for breeding are called Broodmares...if they are pregnant they are referred to as "in foal".
yes
Some mares are already in milk before the foal is born. It is generally only maiden mares or early foaling mares that take more time for their milk to come in.
The same as your own nipples: she likes to be petted there!
in the womb like all other mammals
They don't have to have any