Wild horse populations in North America and Australia require active management to prevent overgrazing and starvation. The welfare of managed horses during roundup and holding is a major public concern.
Wild horse management involves difficult welfare trade-offs between population-level and individual welfare. Unmanaged populations can grow beyond carrying capacity, leading to starvation and habitat degradation affecting all wildlife. But roundup and holding operations cause acute stress, injuries, and long-term confinement that impose severe welfare costs on captured animals. Immunocontraception delivered remotely offers a more humane population control pathway that avoids capture-related trauma, and scaling this approach is a welfare priority for wild horse management.