Moche stirrup vessels are known for which primary characteristic?

Moche stirrup vessels are primarily characterized by their naturalistic portraiture. These vessels often feature intricate sculptural decorations that represent detailed and lifelike depictions of human figures, animals, and scenes from daily life and mythology, which reflect the society's culture and beliefs. This emphasis on realism and attention to detail showcases the Moche civilization's advanced artistic techniques and their ability to capture the essence of their subjects, distinguishing their work from more abstract or simplistic forms. The focus on naturalism through these visual narratives allows for a deeper understanding of the Moche people's values, social structure, and worldview.