Caplin Rous Capybara

Capybaras are excellent swimmers and can survive completely underwater for up to five minutes, an ability they will use to evade predators. If necessary, a capybara can sleep underwater, keeping its nose just over the waterline.
During midday, as temperatures increase, they wallow in water and graze in late afternoons and early evenings when it is cooler. They sleep little, usually dozing off and on throughout the day and grazing into and through the night.