Luiz Claudio Marigo / Female Jaguar (Panthera onca palustris) on the shore of Piquiri River. The Pantanal wetlands of Mato Grosso State, Brazil, October.

Luiz Claudio Marigo / Jaguar (Panthera onca palustris) in water with Yacare Caiman (Caiman yacare), its teeth around the back of the prey's neck. Piquiri River, The Pantanal wetlands of Mato Grosso State, Brazil, October....

Luiz Claudio Marigo / Jaguar (Panthera onca palustris) dragging a Yacare Caiman (Caiman yacare) onto the bank of the Piquiri River. The Pantanal wetlands of Mato Grosso State, Brazil, October.

Luiz Claudio Marigo / Jaguar (Panthera onca palustris) struggling with a Yacare Caiman (Caiman yacare) in the Piquiri River. The Pantanal wetlands of Mato Grosso State, Brazil, October. Sequence 2/4

Luiz Claudio Marigo / Jaguar (Panthera onca palustris) male drinking water from the Piquiri River. The Pantanal wetlands of Mato Grosso State, Brazil, October.

Luiz Claudio Marigo / Jaguar (Panthera onca palustris) male wading through water at the shore of the Piquiri River. The Pantanal wetlands of Mato Grosso, Mato Grosso State, Brazil, October.

Nick Garbutt / A pair of Toco Toucans (Ramphastos toco) flying across the Piquiri River at dawn, northern Pantanal, Mato Grosso, Brazil, September. (Digitally Modified)

Nick Garbutt / Wild female Jaguar (Panthera onca palustris) jumping up sandy bluff on the banks of the Piquiri River (a tributary of Cuiaba River). Northern Pantanal, Brazil. September

Nick Garbutt / Wild female Jaguar (Panthera onca palustris) resting on the banks of the Piquiri River (a tributary of Cuiaba River). Northern Pantanal, Brazil.

Nick Garbutt / Wild Ocelot (Felis pardalis) on the banks of the Piquiri River (a tributary of Cuiaba River) Northern Pantanal, Brazil. September

Luke Massey / Agami heron (Agamia agami) poses on the Piquiri River, Brazil

Luiz Claudio Marigo / Jaguar (Panthera onca) killing Spectacled caiman (Caiman crocodilus) in Piquiri River, Pantanal Mato Grosso, Brazil.