12. Presa Dog
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The Presa Canario, or Canary Mastiff, once herded livestock and deterred predators. Today, training and socialization are essential for this powerful dog. Presa Canarios are known to be aggressive when challenged. With large feet and strong bodies, they strike hard. They often weigh over 100 pounds and have a bite force of 540 psi. An experienced trainer is necessary before bringing one home.
