In 1889, Hall of Fame pitcher Pud Galvin was one of baseball’s first users of performance enhancing drugs (PED’s) after receiving an injection containing crushed dog and guinea pig testicles. – WTF Fun Facts
8 million years ago, an evolutionary cousin of the guinea pig (phoberomys pattersoni) was the size of a cow and is the largest rodent to ever roam the world.
Guinea pig impregnated over 100 female guinea pigs – WTF fun facts
scary Japanese movies: Guinea Pig (film series) – WTF fun facts