I find this a tough topic, because on one hand I'm a big fan of tropical South America and I've regularly visited the Amazon. Also, many zoos I've visited have an Amazon region. On the other hand I am aware that the species from this region are not too iconic compared to e.g. African savannah or Indian plains. Most species in Amazon sections comprise tropical birds, fish, invertebrates and reptiles, none of which would suit habitats as we know them now. We also have quite a decent selection of tropical South-American species with:
- Capybara
- Giant Anteater
- Spectacled Caiman
- Cuvier's Dwarf Caiman
- Nine-Banded Armadillo
- Jaguar
- Columbian White-Faced Capuchin
Essential habitat animals from the Amazon that we still miss that could be implemented with current mechanics are:
- South-American Coati
- Ocelot
- Squirrel Monkey
- Collared Peccary
Less essential but nice to have:
- Southern Tamandua
- Agouti
- Bush dog
- Jaguarundi
For some species we would need new mechanics, but these are not fully unrealistic:
- Spider Monkey
- Two-toed sloth
- Golden Lion Tamarin
Then, most importantly for a good Amazon region we would need the following, which are less realistic atm:
- Birds (macaws, toucans, -of-the-rocks, harpey eagles, vultures)
- Fish (arapaima, pacu, piranha, redtail catfish)
- Reptiles (green anaconda, helmeted basilisk, red-footed tortoise)
For non-Amazon South-America I think we are doing well, although I would like to have:
- Patagonian Mara
- Spectacled Bear
- Greater Rhea
- Tegu