Which term is used for a young horse full of spirit and curiosity, typically described as having long legs and fuzzy hair?

The term that describes a young horse full of spirit and curiosity, characterized by long legs and fuzzy hair, is "foal." A foal is specifically a horse that is less than one year old. At this stage, foals are known for their playfulness and boundless energy, which are manifestations of their youthful spirit and curiosity about their surroundings.

This excitement and liveliness are often accompanied by a shaggy coat that can appear fuzzy, especially in colder months. As foals grow, they start to develop into either colts or fillies, depending on their sex, but it is during the foal stage that they exhibit the most youthful traits. Being a foal is a crucial period in a horse's development, where they learn to interact with their environment and begin the process of socialization with other horses.

In contrast, other terms refer to horses at different ages or with different characteristics. A filly is a young female horse that is typically older than a foal, and a colt is a young male horse also beyond the foal stage. A yearling is a horse that has reached its first birthday but is not yet two years old, further distinguishing it from the earlier life stages of a foal.