Mammals:
* Jaguar: The largest cat in the Americas, Jaguars are elusive but can be spotted in the rainforest surrounding the falls.
* Pumas: These stealthy predators roam the forests and are sometimes seen near the falls.
* Ocelots: Smaller and more commonly seen than jaguars, these spotted cats are fascinating to observe.
* Capybaras: The world's largest rodents, capybaras are semi-aquatic and can be found near water sources.
* Howler Monkeys: These noisy primates live in the forest canopy and can be heard throughout the day.
* Coatis: Agile, long-nosed mammals that forage for fruit and insects on the forest floor.
* Tapirs: Large, pig-like animals that are semi-aquatic and can be seen grazing near water.
* Giant Anteaters: These solitary creatures are specialized for feeding on ants and termites and can be seen in the grasslands.
Birds:
* Toucans: Colorful, tropical birds with large beaks, Toucans are a delight to see in the rainforest.
* Macaws: Brightly colored parrots that are often seen flying overhead.
* Kingfishers: These small, brightly colored birds can be found near water sources, where they hunt for fish.
* Hoatzin: A unique bird that is sometimes referred to as the "stinking bird" due to its distinctive odor.
* Herons: Graceful wading birds that can be seen near the falls, hunting for fish and other aquatic creatures.
Reptiles:
* Caimans: Crocodiles can be seen in the rivers near the falls, though they are usually not a threat to humans.
* Iguanas: These large lizards are often seen sunning themselves on rocks near the falls.
* Snakes: A variety of snakes live in the rainforest surrounding the falls, including boa constrictors and venomous vipers.
Other:
* Butterflies: The rainforest is home to a diverse range of butterflies, with vibrant colors and patterns.
* Fish: The Iguassu River is home to a variety of fish species, including catfish, piranhas, and tetra.
Important Note: The Iguassu Falls region is a wild and beautiful place, but it is important to remember that you are visiting the animals' habitat. Please respect wildlife and keep a safe distance.