The word captivity. Unfortunately, Heini Hediger titled his most important book, “Wild Animals in Captivity”. And at least in German, but I think in English it’s not far away. In German, captivity means prison. And there’s a mental difference between a prisoner and a zoo animal. Although, there was one old zoo, the old Toronto Zoo, the old one, who published a guidebook in which you could read the zoo was built by real specialists, namely by prisoners. But the reality is totally different. A human prisoner is being punished because he did something or didn’t something.