12. Presa Dog
The Presa Canario, also known as the Canary Mastiff, was once used to herd livestock and ward off predators. Training and socialization are crucial for this powerful dog. Presa Canarios are known to be aggressive when challenged. With their large feet and strong bodies, they can deliver powerful strikes. Weighing over 100 pounds, they have a bite force of 540 psi. A skilled trainer is essential before introducing this dog into a household.