Short answers, pulled from the story.
The scientific name of the Japanese raccoon dog is Nyctereutes viverrinus. This name was established by Coenraad Jacob Temminck in the first edition of Fauna Japonica published between 1842 and 1845. Some authorities classify it as a distinct species while others consider it a subspecies of the common raccoon dog.
The Japanese raccoon dog first entered Western scientific literature in the 1820s through the travels of Philipp Franz von Siebold. Siebold sent specimens back to Europe which were subsequently described by naturalist Coenraad Jacob Temminck. The initial classification relied on physical appearance before modern genetic analysis revealed unique traits.
Japanese raccoon dogs live for seven to eight years in the wild. Animals in captivity have been known to reach the age of thirteen. Their social structure is typically monogamous with breeding pairs forming between February and April.
Some scientists consider the Japanese raccoon dog a distinct species due to a unique chromosomal structure involving eight Robertsonian translocations. This genetic quirk suggests the animal has evolved in isolation on the Japanese archipelago. The karyotype differs significantly from the mainland common raccoon dog leading to assumptions of infertile offspring upon interbreeding.
The earliest written record of the Japanese raccoon dog supernatural abilities appears in the Nihon Shoki from the Nara period. This historical text describes tanuki in the country of Mutsu turning into humans and singing songs during the spring. These stories portray the animal as a mischievous trickster known as the bake-danuki.
A conservative estimate indicates that up to 370,000 Japanese raccoon dogs die annually from vehicle collisions. This mortality rate highlights the encroachment of human infrastructure on their habitat. The species is listed as least concern by the IUCN due to its wide distribution and abundant population.