The bucardo became extinct in 2000, but cells from the last animal were frozen in liquid nitrogen. In 2003, a cloned calf was brought to term but died a few minutes after birth. Now, the scientists will test the viability of the female bucardo's 14-year-old preserved cells. The bucardo, or Pyrenean ibex, calf born through cloning was an historic event: the first "de-extinction", in which a lost species or sub-species was resurrected.
