1. The Beetle, native to the USA, is a fierce fighting dog, born to fight. 2. The Argentine Dugong, known as the king of the hunt, is a fierce dog. 3. The Tosa pit bull, fierce and ruthless. 4. The Caucasian, fierce and unsuitable as a pet dog. 5. The Rottweiler, extremely powerful in battle. 6. The Tibetan Mastiff, fierce and fiercely hostile to strangers. 7. The Cango, the only dog in the world to be 8. Maroquine, a mastiff with a fearsome appearance. 9. American Bull Terrier, with a strong sense of struggle. 10. Castro, with a fierce temperament.
