A yearling is a young animal, typically a horse, that is between one and two years old. This stage of development is crucial as yearlings undergo significant growth and begin to develop their physical and social skills. They are often weaned from their mothers and start to adapt to life without parental care. In the equine world, yearlings are often prepared for training and future riding or racing careers. Breeders and trainers assess their conformation and temperament to determine their potential. Proper care and nutrition during this period are essential for healthy development, setting the foundation for their future as adult horses.