The Dusicyon avus was one of two fox-like species that ranged in an area of Brazil, Chile, Uruguay, and Argentina. The second species that still lives in the region is the South American gray fox, also known as the chilla. The chilla has been introduced to the Falkland Islands to replace the extinct Falkland Islands wolf in the missing ecological niche. The natives of the Patagonia region, the Ona, described two types of foxes. One being the chilla and the other being a “big fox” that they described around 1900. The exact date of the Argentinean warrah’s extinction is unknown. Some scientists think that it may still have existed in Patagonia until the early 1900’s, but others think it probably died off closer to 500 years ago. There are two other mysteries surrounding South America’s ‘big fox”. The first was were they kept as pets? There were two sights, Loma de los Muertos in General Conesa, Río Negro Argentina and Cañada Seca, Mendoza Argentina, where the bones of the Dusicyon avus were buried next to human remains. Although wolves were the chosen canine throughout much of human history, Russian scientist, Dmitry Belyaev, did prove that in just four generations foxes bred with the friendliest disposition will take on traits of modern dogs such as floppy ears, curled tails, and even the ability to bark. The last mystery surrounding the Argentinean warrah was the cause of its extinction. There was no known climate change going on 500 years ago in Patagonia that would have led to its demise. Another theory was the cross breeding with domestic dogs, but there is no genetic evidence that has been shown to exist. Perhaps canine diseases were transmitted to the warrahs. Even though Dusicyon avus teeth were thought to be used as part of rituals and ceremonies, it doesn’t appear that overhunting was a factor, especially since they were kept as pets. Even though it had a large range, it appeared to have hit a genetic bottleneck with low genetic diversity. Although Jurassic Park is fiction, scientists are working on several de-extinction projects. In fact, in 2003 scientists did bring back the extinct Pyrenean ibex, a type of wild goat, for 7 minutes before it died, showing de-extinction is possible. The Argentinean warrah might be a candidate for this if scientists could collect DNA from the bone fragments that have been unearthed in Loma de los Muertos in General Conesa, Río Negro Argentina or in Cañada Seca, Mendoza Argentina. Efforts are taking place in the Patagonia region to protect the land and restore wildlife in the area. The Chacabuco Valley of Chile was one of the largest livestock ranches in the country before 752,504 acres of land was set aside on December 11, 2018 to establish the Patagonia National Park. The goal is eco-restoration and rewilding wildlife like the puma, the condor, the ñandú, and the endangered huemul, the South Andean deer. A big piece of this conservation effort focuses on community involvement that takes into account heritage and economic development in the area. If the Aregentean warrah was brought to life, could it ever be reintroduced to its native homeland in the steppe grasslands of Patagonia?