It should realistically be more. I was being generous.I mostly agree with your numbers 50% african is a bit steep
That doesn't matter. The whole idea unravels as soon as you start worrying about "local" collections.due to north america zoos having alot of local animals
The game needs 50% New Zealand animals because New Zealand zoos have a lot of local animals. See? Doesn't work. On a global scale North American species are not really hugely widespread. Key species, yes; in terms of habitat animals, you're looking at American bison, alligators, flamingos (kind of a stretch even then; most zoos outside of NA seem to keep greater flamingos or the Andean and Chilean flamingos), and smaller critters like prairie dogs, with the rest being species that crossover with Eurasia (wolverines, reindeer, muskox, polar bears, etc).