Babirusa actually pierce the flesh in the snout. All species of babirusa are listed as threatened by the International Union for Conservation of Nature (IUCN), shown on their Red List since at least 2010 and current in 2017. The genus is monotypic within the subfamily Babyrousinae, or alternatively considered to form a tribe, Babyrousini, of the subfamily Suinae. To date, only one fossil skull has been found to suggest a larger ancestor. All members of the genus were considered part of a single species until recently, the babirusa or pig-deer, "B. babyrussa", but following the split into several species, this scientific
The Call of the Wild American literature scholar Donald Pizer, is that it is a combination of allegory, parable, and fable. The story incorporates elements of age-old animal fables, such as "Aesop's Fables," in which animals speak truth, and traditional beast fables, in which the beast "substitutes wit for insight". London was influenced by Rudyard Kipling's "The Jungle Book", written a few years earlier, with its combination of parable and animal fable, and by other animal stories popular in the early 20th century. In "The Call of the Wild", London intensifies and adds layers of meaning that are lacking in these stories. As a writer