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4. Presa Canarios
As another breed of dog used to fight off large predators, the Presa Canario is only recommended for experienced owners. Furthermore, in the past 34 years dogs of this breed have been implicated in at least 115 recorded attacks, 18 of which resulted in human deaths. Unfortunately, since the animals are capable of high aggression when trained for it, they are widely used as fighting dogs. As such, they are now banned in several countries.
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