Jeff Foott / Jaguar (Panthera onca) male, hunting Capybara (Hydrochoerus hydrochaeris). The capybara jumping away has cut the nose of the Jaguar with its toenail. Cuiaba River, Pantanal Matogrossense National Park...

Jeff Foott / Jaguar (Panthera onca) male, hunting Capybara (Hydrochoerus hydrochaeris). The capybara while jumping away has cut the nose of the Jaguar with its toemail. Cuiaba River, Pantanal Matogrossense Nationa...

Gerrit Vyn / Porcupine (Erethizon dorsatum) on tundra. North Slope, Alaska, USA. September.

Gabriel Rojo / Patagonian cavy (Dolichotis patagonum ) rear view of two, La Pampa, Argentina.

Gabriel Rojo / Cattle tyrant (Machetornis rixosus) perched on capibara (Hydrochoerus hydrochaeris) Ibera Marshes, Corrientes Province, Argentina

Nick Garbutt / Female Capybara (Hydrochoerus hydrochaeris) swimming in line with young after escaping a Jaguar attack (Panthera onca palustris) in a lagoon off the Paraguay River. Taiama Ecological Reserve, Pantanal...

Ben Cranke / Capybara (Hydrochoerus hydrochaeris) family group together on a river bank, Mato Grosso, Pantanal, Brazil. August.

Ben Cranke / Wattled Jacana (Jacana jacana) perched on resting Capybara (Hydrochoerus hydrochaeris) Mato Grosso, Pantanal, Brazil. July.

ZSSD / Brazilian Porcupine (Coendou prehensilis), native to Brazil

Petra Wegner / Guinea Pig Coronet

Steven Kazlowski / North American porcupine (Erethizon dorsatum) pup feeds on Alaskan high brush cranberries in the foothills of the Takshanuk Mountains, South-East Alaska, USA

Tim Fitzharris / Common Porcupine (Erethizon dorsatum) eating an apple, North America