1 - Because people can't, generally, travel to where animals live to see them, if they even could with travel.
2 - When people see different animals, it helps to make them more environmentally minded.
3 - Zoo's have been doing some great work with saving animals in recent years, but they are trying to make money, too, even if part of that is for animal care. And, one good way to bring in the people, is to have interesting and unusual animals for them to see.
What's the most unusual animal that you ever saw in a zoo?
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