Dancing Hoskuld
Deity
Why would animals you get from an advanced building like the biodome (or even trainers) be based (i.e. limited to) on prehistoric myths?
Because you can only have animals in a zoo that you have captured or traded. The Myths are a good representation of that.
I was thinking of herds, pastures and hunting camps as well, which handle the more domesticated ones.
Besides, as I stated earlier, there is a tag for buildings that reduce the costs of another building (or more then 1) ONLY in the city were the building IS.
Limiting which cities you can build the wonder in, or more likely making it harder for the AI to get the wonder because it does not decide on which is the best city for a wonder just on if it is good to build that wonder in the city it is currently looking at.