The Nebelung is a rare breed of the domestic cat. Nebelungs have long bodies, wide-set green eyes, long and dense fur, and mild dispositions. The name Nebelung — apparently a portmanteau of the German word (Nebel) for Mist or Fog and a medieval Germanic saga, Nibelungenlied — is perhaps derived from the cat's distinctive silky blue-grey coat and from the breed's progenitors, who were named after the two major figures in the Nibelungenlied, the German warrior Siegfried and the Icelandic queen Brunhilde.
When it comes to the Nebelung, the operative word is long: long, graceful neck and body, long legs, long coat, and long tail. Slightly oval eyes are a vivid green color, or sometimes a yellow-green. Large, pointed ears sit atop a modified wedge-shaped head that is more pointed than rounded. The overall appearance is of a long, sturdy, well-muscled cat. The soft double coat feels fine and silky; it is a beautiful gray color and is tipped with silver. Males and, to a lesser extent, females have a ruff around the neck. The fur on the tail is longer than that on the body. Tufts of fur are found behind the ears and in-between the toes, and the hind legs sport pantaloons. The adult coat reaches its full development when the cat is approximately two years old. Life span of a Nebelung is 16+ years. A Nebelung weighs between 3.5 kg (7.11 lbs) for female and 6.5 kg (14.5 lbs) for male sterilized.
Nebelung cats are lively, playful, affectionate, good-natured, and intelligent. The cat's mild-mannered state and personality may not always reflect the relatively high level of intelligence often found in the breed. In spite of the fact that it is an active cat, it can live very well indoors. Nebelungs prefer their own families and often keep a distance from strangers. They tend to bond with a select few humans and stay loving and devoted throughout their lives. It is, however, a cat that gladly accepts company of its people or of another cat. Nebelungs are very good communicators and will remind their owners of problems. This happens often since Nebelungs can be very picky about things such as litter cleanliness and food type. Many owners of the Nebelung cats say that they can act more like dogs at times, being extremely loyal to their owner and family. It enjoys sitting in a lap and being petted and will follow its favorite person devotedly from room to room. This is a cat that likes routine and may require a little time to adjust to changes in the household. Early socialization can help it become more adaptable.