In the wild and on the farm, a mare's behavior shifts dramatically during her estrous cycle (or heat). Videos explaining signs of receptivity—such as vocalizing, winking, and raising the tail—help demystify the breeding process for the public. Conversely, a non-receptive mare will decisively reject a stallion's advances, providing high-stakes visual moments that make for highly clickable content. 3. Hormonal Shifts After Breeding