A yearling is a young horse, either male or female, between one and two years of age, marked by physical immaturity and energetic unpredictability. Training typically emphasizes gentle handling, with discussions about methods such as riding or harness work, highlighting differing opinions on readiness. Authors have examined the term in various contexts: Nat Love uses it literally to denote equine age, while Adela E.
Orpen places yearlings within the context of cattle herding, and John Seely Hart applies it metaphorically to contrast the Old and New Year. Edwin Sidney Hartland connects it to early time-measurement practices, and Edith M. Thomas incorporates it into poetic meditations on the cyclical nature of time. These varied perspectives illustrate the term’s dual function—as both a biological phase and a symbolic framework for growth, change, and cultural timekeeping.