Some of the rich people who kept wild animals opened zoos, which were places where ordinary people could pay money to come and look at the animals. The enclosures for the animals were designed to keep people safe from the animals, and to be able to see them. Nobody thought of making their environment like the real environment they came from in the wild.

Thousands of birds and animals were collected from far away countries, and put in boxes to send back to Europe and other parts of the world. If the animals survived the journey, they would be put in zoos for the rest of their lives.

Mostly, these animals could not breed in captivity, because they were not happy or healthy enough, and so a constant stream of replacement animals were necessary.