I have posted two pictures here, the first taken at day 228 and the second at day 330. The photos clearly show the lengthing of BM's vulva. Another very important sign in her progress towards foaling! A mares vulva will lengthen and soften while progressing. As foaling nears, she will no longer be able to scrunch up her vulva when the tail is lifted. It will be void of wrinkles and the vulva in most cases will stick out as far as the buttocks of the mare
What you are not able to see in the picture but important to note is the force it takes to lift a mares tail. In the first photo the mares tail was considerably harder to lift, she was able to 'clamp' it down in order to try to prevent you viewing her 'lady bits'. When the second photo was taken, she was unable to 'fight' the process as the state of softening is so far advanced in preparation for foaling.
These are two very important processes in the journey towards the birth of a foal.
Stay tuned for our next clue in progress.