Pete Oxford / Yellow Anaconda (Eunectes notaeus) on branch near river, Pantanal, Brazil

Luciano Candisani / Giant Anteater (Myrmecophaga tridactyla) walking through grass, Brazil

Luciano Candisani / Aruba Rattlesnake (Crotalus durissus) in scrub habitat, Jalapao State Park, Jalapao, Brazil

Luciano Candisani / Black-striped Capuchin (Sapajus libidinosus) at cave entrance, Piaui State, Brazil

Luciano Candisani / Broad-snouted Caiman (Caiman latirostris) with eyes above water surface, Bonito, Brazil

Theo Allofs / Capybara (Hydrochoerus hydrochaeris) young playing, Pantanal, Brazil

Theo Allofs / Yellow Armadillo (Euphractus sexcinctus) at burrow entrance, Pantanal, Brazil

Mark Moffett / Military River Frog (Thoropa miliaris) the only frog in the world to hunt in tide-pools, Atlantic Forest, near Sao Paulo, Brazil

Mark Moffett / Shield Toad (Brachycephalus sp) in bromeliad, endemic to the Atlantic Forest, Brazil

Claus Meyer / Red-breasted Toucan (Ramphastos dicolorus) portrait, Atlantic Forest ecosystem, Brazil

Claus Meyer / Yellow Armadillo (Euphractus sexcinctus) at burrow, Caatinga ecosystem, Brazil

Claus Meyer / Giant River Otter (Pteronura brasiliensis) pair at river's edge, Pantanal, Brazil