Capybaras -- the largest rodents in the world -- show little resemblance to their guinea pig relatives. Robust and agile, they reach the size of a small pig and weigh upward of 100 pounds at maturity
From marsupials to bats to carnivores to cetaceans, fully one-fourth of the world's mammals can be found on the South American continent. Rexford D. Lord provides the most vivid snapshot of South Ame
