Species: Guinea pigs Age: 1 year old Meet Pyro and Nimbus, a bonded pair of 1-year-old guinea pigs. Pyro is smooth and white with beige around his eye, and Nimbus is a white and brown Abyssinian.

Visitors to the Amazonia exhibit at the Smithsonian’s National Zoo can now learn about the natural history and cultural significance of a familiar animal—the guinea pig. Though guinea pigs are common ...