First, our performing animals are not taken from the wild. As to the ethical problems. we always believe humans and animals canóand shouldólive together nicely. To us, the performing animals are representatives of their species, and our circus is one of the only places left willing to support this special role of performing animals in the existence of the species. Those who argue that circus life is harmful to animals show little knowledge of these facts.

What does the underlined sentence mean? Can you use a simpler way to rewrite?