Every week there is news from several cities in the world about a zoo being evacuated due to the runaway of great apes or other animals considered to be dangerous.

The latest news came from Hannover, an old and traditional zoo, which had a runaway of five chimpanzees. Using branches as stairs, they jumped the fence of their enclosure. The photo that illustrates this issue shows the unusual and dangerous situation when a chimpanzee approaches a group of visitors who do not know how to act opposite her. Any movement of humans considered aggressive by the chimp could generate a reaction of the primate.

Hannover Zoo had to evacuate all visitors to avoid a tragedy. A girl of 5 years was struck by a chimpanzee, being wound in her head, lukcly, without much gravity.

It is important to consider that great apes are intelligent beings, like humans, and have the ability to plan their actions, hiding their intentions. If they steal a key from a lock of a handler, they are able to open the doors of their enclosure, getting free and releasing other primates.

Considering that most large primates in zoos are mentally disturbed, due to the harassment from the public and the strict regime of captivity, are bombs ready to explode in case of they get free.

Faced with the repetition of these incidents, it is important that the authorities of each country suspend the exhibition of large primates in zoos, saving the lives of many, because if they escape, they are ultimately slaughtered by repressive police forces. In Hannover Zoo, police was ready to kill the chimpanzees if they left the area of the zoo.