Conservation/extinction

I wanted to talk about the Pryenean ibex because they used to roam(grazed) through mountains of Spain. We hunted down most of them throughout the 20th century. By 1989 there were only a dozen left. The last one of them was a female we named Celia, was killed under a tree in 2000. We could have saved the last dozen in 1989 and let them repopulate but us being human beings we just hunted the rest down without thinking. But there have been tests about being them back to life. There has been a few cases of them coming back but they die almost right away.