Pete Oxford / Capybara (Hydrochoerus hydrochaeris), Pantanal, Mato Grosso, Brazil

Pete Oxford / Capybara (Hydrochoerus hydrochaeris), Pantanal, Mato Grosso, Brazil

Pete Oxford / Capybara (Hydrochoerus hydrochaeris), Pantanal, Mato Grosso, Brazil

Pete Oxford / Capybara (Hydrochoerus hydrochaeris), Pantanal, Mato Grosso, Brazil

Pete Oxford / Capybara (Hydrochoerus hydrochaeris), Pantanal, Mato Grosso, Brazil

Pete Oxford / Capybara (Hydrochoerus hydrochaeris) with flycatcher on back, Pantanal, Mato Grosso, Brazil

Sean Crane / Capybara (Hydrochoerus hydrochaeris) group in shallow water, Yacuma River, Pampas, Bolivia

Sean Crane / Capybara (Hydrochoerus hydrochaeris) reclining on river bank, Yacuma River, Pampas, Bolivia

Sean Crane / Capybara (Hydrochoerus hydrochaeris) mother with young, Yacuma River, Pampas, Bolivia

Sean Crane / Capybara (Hydrochoerus hydrochaeris), Yacuma River, Pampas, Bolivia

Sean Crane / Capybara (Hydrochoerus hydrochaeris) with a Pale-legged Hornero (Furnarius leucopus) on its head, Brazil

Sean Crane / Capybara (Hydrochoerus hydrochaeris) with a Pale-legged Hornero (Furnarius leucopus) on its back, Brazil

Sean Crane / Capybara (Hydrochoerus hydrochaeris) family sitting on river bank, Pantanal, Brazil

Christophe Courteau / Capybara (Hydrochoerus hydrochaeris) drinking water from a swimming pool. Hato El Cedral, Llanos, Venezuela.

Christophe Courteau / Capybara (Hydrochoeris hydrochaeris) Hato El Cedral, Llanos, Venezuela.

Christophe Courteau / Yellow-Headed Caracara (Milvago chimachima cordatus) feeding on parasitic ticks from Capybara (Hydrochoeris hydrochaeris) Hato El Cedral, Llanos, Venezuela.

Christophe Courteau / Yellow-Headed Caracara (Milvago chimachima cordatus) feeding on parasitic ticks from Capybara (Hydrochoeris hydrochaeris) Hato El Cedral, Llanos, Venezuela.

Luiz Claudio Marigo / Family of Capybaras (Hydrochoerus hydrochaeris) on river bank of Cuiaba River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.

Luiz Claudio Marigo / Family of Capybaras (Hydrochoerus hydrochaeris) in Cuiaba River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.

Luiz Claudio Marigo / Family of Capybaras (Hydrochoerus hydrochaeris) on river bank of Cuiaba River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.

Luiz Claudio Marigo / Female and baby Capybara (Hydrochaeris hydrochaeris) resting on bank of Piquiri River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.

Luiz Claudio Marigo / Capybaras (Hydrochoerus hydrochaeris) Pixaim River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.

Luiz Claudio Marigo / Capybara (Hydrochoerus hydrochaeris) at Pixaim River, Pantanal of Mato Grosso, Mato Grosso State, Western Brazil.

Hermann Brehm / Capybara (Hydrochaeris hydrochaeris) family at water's edge, Pantanal, Brazil.

Hermann Brehm / Capybara (Hydrochaeris hydrochaeris) babies Pantanal, Brazil.

Hermann Brehm / Capybara (Hydrochaeris hydrochaeris) and Cattle Egret (Bubulcus ibis) at water's edge, Pantanal, Brazil.

Hermann Brehm / Capybara (Hydrochaeris hydrochaeris) family with Spectacled Caiman (Caiman crocodilus) Pantanal, Brazil.

Hermann Brehm / Capybara (Hydrochaeris hydrochaeris) family, Pantanal, Brazil.

Angelo Gandolfi / Jabiru (Jabiru mycteria) with large group of Capibaras (Hydrochaeris hydrochaeris) and Caiman, Pantanal, Brazil.

Angelo Gandolfi / Capybara (Hydrochaeris hydrochaeris) watching Yacare Caiman (Caiman yacare) warily, Pantanal, Brazil

Angelo Gandolfi / Capybara (Hydrochaeris hydrochaeris) mating. Pantanal, Brazil

Angelo Gandolfi / Capybara (Hydrochaeris hydrochaeris) with young and a Cattle Heron (Bubulcus ibis) on its back, Pantanal, Brazil

Angelo Gandolfi / Capybara (Hydrochaeris hydrochaeris) group with young on the Transpantaneira road, Mato Grosso, Brazil

David Tipling / Capybara (Hydrochoerus hydrochaeris) at a clay lick on banks of river at Tambopata, Amazon Basin, Peru

David Pattyn / Capybara (Hydrochoerus hydrochaeris) family sitting at the edge of a river, Pantanal, Brazil.

David Pattyn / Capybara (Hydrochoerus hydrochaeris) family group with female suckling the young, Pantanal, Brazil.

David Pattyn / Capybara (Hydrochoerus hydrochaeris) mother and young sitting on a river bank, Pantanal, Brazil.

Christophe Courteau / Capybara (Hydrochaeris hydrochaeris) sunning on riverbank, Pantanal, Brazil.

ZSSD / Capybara (Hydrochoerus hydrochaeris) mother with young, native to South America

ZSSD / Capybara (Hydrochoerus hydrochaeris) young, native to South America

Ben Lascelles / Capybara (Hydrochoerus hydrochaeris). Esteros del Ibera / Ibera Wetlands Provincial Nature Reserve, Corrientes, Argentina, October

Ben Lascelles / Capybara (Hydrochoerus hydrochaeris). Esteros del Ibera / Ibera Wetlands Provincial Nature Reserve, Corrientes, Argentina, October

Paul Williams / Capybara (Hydrochoerus hydrochaeris) baby stretching, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) family group by river, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) family resting on river bank with Yacare caiman (Caiman yacare) nearby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) family group by river, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) with Cattle tyrant (Machetornis rixosa) bird on its back looking for insects to feed on, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) female face portrait, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male adult scent marking, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) family resting on river bank, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) family on river bank, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) female with baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) baby portrait, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male and female with suckling baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male and female with suckling young, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male adult scent marking, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male and female with baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) female with suckling baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) female with baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) with Cattle tyrant (Machetornis rixosa) bird on its back looking for insects to feed on, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) female with suckling baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male and female adults in bed, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male and female with baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) female with baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) two young individuals grazing, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) female with baby, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) female, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male and female, Pantanal, Pocone, Brazil

Paul Williams / Yacare caiman (Caiman yacare) sliding into river near Capybara (Hydrochoerus hydrochaeris) Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male adult scent marking, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male and female sitting on riverbank, Pantanal, Pocone, Brazil

Paul Williams / Capybara (Hydrochoerus hydrochaeris) male and female with suckling baby, Pantanal, Pocone, Brazil

Ben Lascelles / Capybaras (Hydrochoerus hydrochaeris) emerging from water in wetland habitat. Ibera Wetlands Provincial Nature Reserve, Corrientes, Argentina, October.

Ben Lascelles / Capybara (Hydrochoerus hydrochaeris). Ibera Wetlands Provincial Nature Reserve, Corrientes, Argentina, October.

Daniel Heuclin / Cabiai / capybara (Hydrochoerus hydrochaeris) sitting on a muddy river bank, Yapacaní River, Bolivia.

Pete Oxford / Capybara {Hydrochoerus hydrochaeris} with Flycatcher perched on its back, Panatanal, Brazil

Patricio Robles Gil / Capivara / Capibara (Hydrochoerus hydrochaeris) family resting on river sand bank. Piquiri River, Parana, Southern Brazil.

Patricio Robles Gil / Capivara / Capibara (Hydrochoerus hydrochoeris) parent carrying its baby on its back while swimming across a marsh. Parana, Southern Brazil.

Luiz Claudio Marigo / Capybara (Hydrochaeris hydrochaeris) adult with two juveniles. The Pantanal wetlands of Mato Grosso State, Brazil, November.

Pete Oxford / Capybara (Hydrochoerus hydrochaeris) swimming across the Rewa River, Iwokrama Reserve, Guyana

Mary McDonald / Cattle Tyrant (Machetornis rixosus) riding on the head of a Capybara (Hydrochoerus hydrochaeris) moving through swampland. The Tyrant flycatcher is hunting for insects disturbed by the rodent. Pantana...

Mary McDonald / Capybara (Hydrochoerus hydrochaeris) juvenile walking with mother, in shallow water, in the jungle of the Pantanal, Brazil.

Nick Garbutt / Tame wild Capybara (Hydrochoerus hydrochaeris) with tourists watching, Araras Lodge, Northern Pantanal, Brazil. September 2010

Nick Garbutt / Capybara (Hydrochoerus hydrochaeris) family group, wading along the Pixiam River, Northern Pantanal, Brazil. September

Nick Garbutt / Wild male Jaguar (Panthera onca palustris) dragging a Capybara (Hydrochoerus hydrochaeris) it has killed at the edge of a tributary of Cuiaba River, Northern Pantanal, Brazil. September

Nick Garbutt / Wild male Jaguar (Panthera onca palustris) dragging a Capybara (Hydrochoerus hydrochaeris) it has killed at the edge of a tributary of Cuiaba River, Northern Pantanal, Brazil. September

Nick Garbutt / Wild female Jaguar (Panthera onca palustris) stalking startled Capybara (Hydrochoerus hydrochaeris) swimming in the Piquiri River (a tributary of Cuiaba River) Northern Pantanal, Brazil. September

Nick Garbutt / Wild female Jaguar (Panthera onca palustris) stalking startled Capybara (Hydrochoerus hydrochaeris) swimming in the Piquiri River (a tributary of Cuiaba River). Northern Pantanal, Brazil. September

Suzi Eszterhas / Capybara (Hydrochoerus hydrochaeris) swimming, Pantanal, Brazil

Suzi Eszterhas / Capybara (Hydrochoerus hydrochaeris) with Smooth-billed Ani (Crotophaga ani) on its head, Pantanal, Brazil

Christophe Courteau / Capybara (Hydrochoerus hydrochaeris) adult with young, Pantanal, Brazil, July

Christophe Courteau / Capybara (Hydrochoerus hydrochaeris) in water, Cabiai, Pantanal, Brazil, July

Christophe Courteau / Capybara (Hydrochoerus hydrochaeris) swimming across Cabiai river, Pantanal, Brazil, July

Pete Oxford / Capybara (Hydrochoerus hydrochaeris) group on riverbank, Pantanal, Brazil