10 clues to help you guess:
1. Loyal but standoffish with strangers
2. Independent guardians
3. Intelligent
4. Can be traced back 2000 years to the Han Dynasty
5. Needed to be saved from extinction.
6. American dog lovers ensured this breed's survival.
7. Early training and socialization is essential
8. "Hippopotamus" muzzle
9. Abundant loose skin
10. Sunken eyes with a scowling expression
Answer: Chinese Shar-Pei