: Documenting the first time a horse is "started" or ridden under saddle, often after several years of preparation.
: Showing how a horse's muscles and frame have developed over time. matures pic
: Sharing photos of a horse's physical transformation from a foal or yearling to a fully developed adult. : Documenting the first time a horse is
: Side-by-side comparisons of the horse at different ages to emphasize the "maturation" process. matures pic
In equestrian social media groups, members use this term when documenting the progress of a "youngster" or a "project horse." It highlights the physical and behavioral changes a horse undergoes as it ages.