Animal pedagody

On Friday, we brought up the new topic of zoos, and discussed how zoos serve a pedagogical function. Sarah mentioned, that we don't really need to learn about wild animals and that we should just leave them alone. Do we need to learn from animals? Do we have the right to take them out of the wild?
Having a pet teaches you how to care for another being, and it also teaches responsibilities. We use various animals for researching which is a necessary tool for new treatments and medications. Zoos give a real life look at, for what a lot of people, will be the closest they ever come to seeing a real-life exotic animal. Animals are a huge part of our world and teach us so much, we do need to learn about them. In some aspects, humans think they own every animal (and thing). I do not think that this is intentional, but our thirst for knowledge blinds us.

Question: Yet, do we have the right to cage animals for our viewing? Where is the line between curiosity and taking away rights?