According to Rodents of the World, by David Alderton, “young capybaras are miniatures of their parents, able to follow their mother and graze grass almost as soon as they are born.” (p. 74) So I’m thinking it’d be fun to give someone an infant capybara and tell them “Here, I got you this guinea pig as a pet.”

Although the capybara weighs only three pounds at birth, they are the largest living species of rodent, and an adult weighs over 150 pounds. Imagine your victim’s surprise when their “guinea pig” grows and grows and grows, to over four feet in length!