I’m not sure that is true. The mixed South American paddock is a standard feature of so many zoos. Brazilian tapir, capybara, mara, giant anteater, rhea, llama, guanaco, vicuña or alpaca maybe even maned wolf. Plus Andean bears and jaguars. And new world monkeys. Not to mention macaws and toucans.
And emus, wallabies and kangaroos are common in even the smallest zoos.
Even in Australasia where there are fewer species there are still lots of capybara, spider monkeys, marmosets and tamarins and squirrel monkeys.
I mentioned this in a different topic but I was surprised in how many zoos they aren't.
Tapir depends, mostly 1 of 2 : malayan / south-american. I think the Malayan tapir has the edge on this one.
Capybara, llama, alpaca, vicuna are in a lot of zoos. Agree on that one.
Andean/spectacled bear and jaguar, was surprised. A few zoos have them, but not as popular as you might expect.
Monkey species, tbh don't know much about these species. They don't draw that much attention in zoos (to me) and the african/asian monkey are more visibly presented.
I do know one of our zoos (mainly focused on ape and monkey species) has a lot of south-american ones (Apenheul zoo)
Going with area size: Most zoos (in Europe) pay a lot more attention to Africa/Asia than other regions. South America could need more attention in PZ - that's why I mentioned it earlier.
Emus/wallabies - yes (but most times in the background - barely noticeable - crowds don't stick around)
Kangaroo is quite uncommon in a lot of big zoos, they have wallabies. Smaller zoos have them but also not that common.
From my experience: Australian sections in zoos are very small or don't exist at all. The smaller zoos with more exotic species tend to have more Australian animals.
I would like to see Australian animals but when people mention the koala - they are very rare in Europe. I was told very difficult to keep in captivity - picky eaters, require more attention and prone to sickness (1 zoo in Belgium has them and 3-4 koals died in 2 years time). From a conservation POV - yes, add them !
I know some species are missing/feel missing. I think the current ratio of in-game animals reflects the ratio in most zoos (at least in Europe)
Again, South-America could use a bit more attention.
I also think some popular requested animals are less popular in real zoos than you might expect.
I don't mind if they added less common animals just to please the gaming community but I think Africa just gets too much critique.
Most African animals are the most popular ones in zoos and some species aren't even present in-game yet..
I think the presented species in ZT/ZT2/ZT2013 gave us some expectations for this game.
A few days ago someone mentioned the Emperor Penguin - both in ZT/ZT2 a popular animal but in RL extremely rare to find in captivity (never seen one in a zoo)
I've seen this penguin on a lot of wishlists.