Complex sentence: The Inca valued vicuñas highly for their wool, and it was against the law for anyone but royalty to wear vicuña garments; today the vicuña is the national animal of Peru and appears in the Peruvian coat of arms.
Split into simpler sentences: The Inca valued vicuñas highly for their wool, and it was against the law for anyone but royalty to wear vicuña garments. The vicuña is the national animal of Peru; its emblem is used on the Peruvian coat of arms.