In the formal grammar of blazonry, 'Rampant' constitutes the most prestigious and ancient attitude for a beast of prey. The animal is depicted meticulously in profile, poised upon its sinister hind foot with the dexter hind foot slightly elevated. The forelegs are extended forward—the dexter raised higher than the sinister—and the tail is traditionally curved over the back, though its specific flourish may vary by the artist's school. This posture is symbolically charged, intended to represent the martial vigor, dominance, and readiness of the armiger to defend their honor and lands.
Historically, the rampant position became the default posture for the lion in the High Middle Ages. Under the strictures of the College of Arms, unless otherwise specified in the patent of arms, a lion is assumed to be rampant. This attitude serves as the archetype of feudal masculinity and sovereignty, effectively communicating the power of the nobility to both illiterate peasantry and rival peers through its silhouette alone.