What does 'luster' refer to in rabbit fur?

Luster refers specifically to the brightness and brilliance of rabbit fur. When evaluating the quality of fur, luster indicates how shiny or reflective the fur's surface appears, contributing to the overall aesthetic appeal of the rabbit. A high luster often implies well-maintained and healthy fur, whereas a dull appearance may suggest lack of grooming or health issues. Understanding this aspect is crucial for assessing the quality of rabbits, especially in a competitive context like a fair or show. In contrast, softness pertains to the feel of the fur, color relates to the pigmentation, and thickness involves the density of the fur, none of which define luster directly.