Further to comments by
@Chlidonias ... what I don't want to see is stuff like "I have a billion dollars and will build a zoo in a highrise apartment block in downtown New York" - because that is just ridiculous and adds no value. Similarly, made-up animals or scenarios which are pointless "a zoo on the moon!" don't add value either.
In my view, the speculative zoo design and planning forum should be considered to be "educational" - allowing members to experiment with "what-if" scenarios that don't need to be 100% achievable, but do need to be based on the realms of possibility.
So, for example, if you are going to create a zoo based around extinct species - you need to put some thought and effort into it to consider what is likely to have worked based on what we know about those species - not just some random flight of fantasy based on some work of fiction.
I don't want to see zoos based on dragons - they are not real. If you want to build a zoo based on dinosaurs - it had better be well researched and well thought out and design something that could feasibly be achieved - assuming we actually had some dinosaurs to populate it with.
This is not the place for games or fantasy or lists of your favourite animals.
You need to be able to justify your decisions - and as mentioned - you should expect critique for your design choices.