The term for a baby horse is a "foal." Foals are typically born in the spring and can stand and walk shortly after birth. They rely on their mothers for milk and care during their early months, gradually transitioning to solid food as they grow. A foal generally refers to a young horse that is less than a year old. Once a foal reaches one year of age, it is often referred to as a yearling until it matures into an adult horse. Foals are known for their playful nature and rapid growth.