Breeding horses involves the process, ideally, of selecting two horses with desirable traits to produce offspring with those same desirable traits, pregnancy, and finally the mare birthing a healthy foal. Some basics of breeding horses include: Breeding horses requires a significant investment of time, finances, and resources, and it is important to have a thorough understanding of the process before beginning. Working with experienced professionals, such as a veterinarian or breeding specialists, can help ensure a successful breeding program and foaling.