i don't think that animals need to stay at zoos,because,the animals just like human,we all have our own life,and every life should have its own freedow.
someone always says that if animals stay at zoos could give them more care about,and they could be happier,but i want to say,if animals alive out of zoos ,then why they can't be happier stay at the zoos?they could do anything they want
so,help animal is not keep them in the zoos,but give them their own freedow,come and join us!