Balto (1919 – March 14, 1933) was a Siberian Husky and sled dog who led his team on the final leg of the 1925 serum run to Nome, in which diphtheria antitoxin was transported from Anchorage, Alaska, to Nenana, Alaska, by train and then to Nome by dog sled to combat an outbreak of the disease.

Balto was named after the Sami explorer Samuel Balto. Balto rested at the Cleveland Zoo until his death on March 14, 1933, at the age of 14. After he died, his body was stuffed and kept in the Cleveland Museum of Natural History, where it remains today.

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