Which of these breeds is the oldest?

Siberian Husky
1049
German Shepherd
258
Tibetan Mastiff
318
Chihuahua
138
Spitz-type dogs are the primary dog type of the Arctic and northern parts of the world, and the Shiba Inu, Chow Chow, Alaskan Malamute, Siberian Husky and Samoyed are being shown by genetic research to be descendents of the oldest dog types known. The Siberian Husky was originally developed by the Chukchi people of the Chukchi Peninsula in eastern Siberia.
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