9. Chow Chow
The Chow is one of the most primitive dog breeds on earth. Although it has a cuddly, bear or leonine appearance, it is naturally very aggressive and unpredictable. Deep-set sunken eyes lend the Chow a very limited peripheral vision, making it easy to startle and annoy the dog unintentionally. It is intensely loyal to its master and suspicious of strangers, and some claim its aloof personality is somewhat cat-like. Weighing up to 70lbs, the purple-tongued Chow was used for hunting and guarding in its native China and was also frequently eaten, which may go a long way toward explaining its charming personality.
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