The reptiles of the tropical freshwater flooded grasslands and wetlands of South and Central America...
This family includes the alligators and caimans.
A young Caiman (Pantanal, Brazil). These crocodilians are generally much safer to approach than their Australasian or African relatives, as they (usually) don't see us people as prey.
Caiman yacare, 'Jacaré' (Portuguese) 'Yacare Caiman', (Hotel Pantanal Mato Grosso, Brazil).
perhaps Philodryas?, (South American) 'Green Snakes'. (Hotel Pantanal Mato Grosso, Brazil).