The capybara is the largest species of rodent in the world, weighing between 35 and 66kg and reaching 1.2 metres in height, despite females being slightly longer than males.
They live in South America in regions where water is easily accessed, being adapted to a semi-acquatic life, thanks to their morphology: barrel-shaped body, forelegs shorter than hind legs, partially webbed toes and eyes, ears nostrils near the top of their heads.
Capybaras live in groups of between 3 and 30 individuals and there is a rather strong hierarchy among the males. They are partly active at night and spend the day in the water. They live an average of 6 years in the wild and up to 12 years in controlled environments.