No primary record identifies a founder, organization, or establishing act for National Chinchilla Day, also called World Chinchilla Day. It circulates as an informal March 23 touchpoint among chinchilla owners, exotic-pet veterinarians, and, since the early 2020s, accredited zoos.
A herd of eleven
In 1923, a mining engineer named Mathias F. Chapman walked off a ship at the Port of Los Angeles with a small wooden crate. Inside were 11 chinchillas, survivors of a voyage of roughly 40 days from Iquique, Chile. From those animals came the first successful captive breeding herd. Nearly every pet chinchilla in the United States descends from that tiny group.



