Two side by side capybaras, falling asleep in swampy wetland, one dipping its head into the water and rolling around to keep cool, while other one keep its eyes closed, wildlife landscape shot

capybara wetland pantanal pair hydrochoerus hydrochaeris habitat swamp wildlife marsh head bog cavy couple fen species two nap rodent ibera asleep brown gregarious lake rest nature calm water reserve dip wild nose sleep relax natural epecuen vegetation south america surface roll national mashland giant provincial brazil greater cool park biosphere tropical