In a move that animal rights groups called "irresponsible and unsustainable," a zoo euthanized 12 healthy baboons in its care due to overcrowding issues.

A German zoo has killed 12 healthy baboons due to a lack of space, prompting protests from animal rights activists. The Nuremberg Zoo in southern Germany said on Tuesday that it killed the monkeys due to overcrowding,

Nuremberg Zoo officials have said a lack of space left them with no option but to kill a dozen healthy baboons. Animal rights groups have filed a criminal complaint against management.