This species of macaques (Sulawesi black-crested macaque) today is one of the endangered species of monkeys. In the world there are only 10 species of monkeys 0000.
Since yesterday - 99998.
Employees of the British zoo had to euthanize two macaques, just because the monkeys were too "aggressive." Due to lack of available cells for fighters, had to euthanize the animals, according to DailyMail.