Three years after the death of the last Pyrenean ibex, Celia, a clone of her is born only to subsequently die from lung defects. Within minutes, the Pyrenean ibex becomes the first and so-far only species to have ever gone de-extinct as well as go extinct twice.

The Pyrenean ibex, Aragonese and Spanish common name bucardo, Basque common name bukardo, Catalan common name herc and French common name bouquetin, was one of the four subspecies of the Iberian ibex or Iberian wild goat, a species native to the Iberian Peninsula and immediately adjacent southern France. The Pyrenean ibex occurred in the northeastern part of the species' range in the Cantabrian Mountains and the Pyrenees, in northern Spain and the far south of France. This subspecies was common during the Holocene and Upper Pleistocene, during which their morphology, primarily some skulls, of the Pyrenean ibex evolved to be larger than other subspecies of Capra pyrenaica in southwestern Europe from the same time.