The capybara is the world's largest species of rodent（啮齿动物）. It has a short head with small ears, and it can grow to be over four feet long.
Capybaras are plant eaters, and grasses are the main food in their d. Capybaras have two pairs of large incisor teeth to bite off grasses, tree bark, and other plants.
Capybaras are s animals and live in large groups. A group usually has one father, one or two mothers and their babies. The members of the group are close to each other.
Capybaras are great swimmers. In fact, they spend lots of time in the water. The water keeps them cool during the hot day, and it provides water plants for them to eat. They also stay in water for s. They can go below the surface to hide from predators(捕食者) such as jaguars and ocelots. A capybara's eyes, ears and nose are near the top of its head. This helps capybaras breathe and keep watch for predators while swimming underwater. Still, they have to be c all times because many of its predators are good hunters in water. When danger is near, capybaras can d to the bottom of a riverbed. They can hold their breath for five minutes before returning to the surface for air.
