FILE This is a Sunday, Feb. 9, 2014 file photo of the carcass of Marius, a male giraffe, as it is eaten by lions after he was put down in Copenhagen Zoo . The zoo that faced protests for killing a healthy giraffe to prevent inbreeding says it has put down four lions, including two cubs, to make room for a new male lion. Citing the “pride’s natural structure and behavior,” the Copenhagen Zoo said Tuesday March 25, 2014 that two old lions had been euthanized as part of a generational shift. It's not known if the lions photographed are the ones that were put down by the zoo. (AP Photo/POLFOTO, Rasmus Flindt Pedersen, File) DENMARK OUT The Associated Press