The Tibetan Mastiff (Tibetan: འདོགས་ཁྱི, Wylie: Dogs khyi; Chinese: 藏獒, Pinyin: Zàng áo) is a large Tibetan dog breed belonging to the mastiff family. Males can reach heights up to 83 cm (33 in). The original Tibetan Mastiff breed from its native range usually weighed 55–90 kg (121–198 lb). Its double coat is long, subject to climate, and found in a wide variety of colors, including solid black, black and tan, various shades of red (from pale gold to deep red) and bluish-gray (dilute black), often with white markings. Canine inherited demyelinative neuropathy (CIDN), an inherited condition, appeared in one of the prominent lines of Tibetan Mastiffs in the early 1980s. Unfortunately, known carriers were bred extensively and are behind many lines still being actively bred. Because the mode of inheritance appears to be as a simple recessive, continued inbreeding can still produce affected puppies.