Capybaras, the Largest and ‘Chillest’ Rodents in the World

Is it a hog? Is it a beaver? Or is it a rodent of unusual size? Nope, nope and yes. Well, sort of. It's a capybara, the biggest rodent on Earth. Closely related to guinea pigs, these semi-aquatic creatures can weigh as much as a human at up to 90 kg (200 lbs). That's a big guinea pig. And though they're large and in charge, they're harmless. They've even been dubbed "nature's chairs," as they are so mellow, they let other animals sit on them. So why are these lovable giants so relaxed? Do they have any natural predators? And would they make good pets?