Which breed is known for having a distinctive hairline?

The breed known for having a distinctive hairline is the Dutch. This distinctive feature is characterized by the unique pattern of color that runs along the rabbit's back and neck, creating an apparent hairline that is a hallmark of the breed. This pattern, often referred to as a "Dutch mark," typically consists of white fur that creates a sharp demarcation with the colored parts of the rabbit’s coat, enhancing its overall appearance.

While other options represent popular breeds like the Holland Lop, American Fuzzy Lop, and Mini Lop, their characteristics are more related to their ear type, body shape, or fur texture, rather than a distinctive hairline as seen in the Dutch breed. The focus on the Dutch's unique coloration and patterning is a key aspect of its breed standard, making it easily identifiable among various rabbit breeds.