Parque is hated because of its lack of new species, why not backfill.
European Hare: Invasive across Argentina, Map Lacks Small Species and it would be a critcal food source for Predators
Geoffroy's Cat: a Small Wild cat native to argentina, A fun small game cat to hunt (class 2) and can be found in Trees sometimes
Capybara: A highly suggested rodent that has a Population in the Millions. It is the largest Rodent and would be a amazing class 4 animal. they also hang out by grassy riverbanks
Map Changes: More Rugged Terrain, Steep Mountains, River system with a Riverbank that has green grass, no tall yellow grass. And many Turqouise lakes.
Here are some pictures