What is smut in the context of rabbit fur?

Smut refers to a dark, sooty appearance or pelt stain that can occur on a rabbit's fur. This often manifests as patches of darker fur, typically seen on specific breeds or in certain coloration patterns. Smut can occur due to several factors, including genetics or environmental influences. It does not imply any health issues, diseases, or deficiencies, which is why it is distinct from the other options presented. Understanding smut is important for breeders and showmen, as it can impact the overall appearance and quality of a rabbit's coat in the context of rabbit showmanship.