10. Saint Bernard
The St. Bernard is a breed of very large working dog that originated from the Swiss and Italian Alps. Originally bred as a rescue dog, they have been made famous by tales of their gargantuan size and Alps rescue mission abilities. However, just like with other very large dogs, they must be trained to be sociable with strangers and other dogs during their infancy in order to prevent aggressive territorial behavior.
9. American Bandogge
This incredibly strong dog is a cross breed between an American Pit Bull Terrier and a Neapolitan Mastiff. In spite of its muscular look, the dog was not originally bred for fighting. Nevertheless, some have used it as fighting dog.
The Dogo Argentino is a large, white, muscular dog that was developed in Argentina primarily for the purpose of big-game hunting, including wild boar and puma. Though extremely strong and athletic, the Dogo was bred to be non-aggressive towards humans. Nevertheless, it is illegal to own a Dogo in the United Kingdom under their Dangerous Dogs Act of 1991.
The American Bull Dog is a muscular heavy dog. Though they are known for their pleasant and friendly demeanor, they can also exhibit the trait of ‘stubbornness’ as they are extremely confident. Originally this breed was bred as a working farm utility dog that could catch and hold wild boar and cattle, kill vermin, and guard an owner’s property.
Also known as the German Mastiff or Danish Hound, this breed of domestic dog is famous for its massive size. This breed holds the record for the world’s tallest dog at 44 inches and was originally bred to hunt wild boar and deer in Germany.
5. Perro de Presa Canario
The Perro de Presa Canario is a large dog that was originally bred for working livestock. The name of the breed is Spanish and it means “Canarian catch dog”. Presas require early socialization and obedience training. In some situations, the Presa can be aggressive toward other dogs and suspicious of strangers.
Though not typically aggressive by nature, they are listed in our 25 most dangerous dogs breed list due to 48 negative incidents involving the breed from 1982 to 2012. Originally from Germany where they can grow from 50 to 70 lbs, their bright, playful and energetic personalities are countered by their ‘headstrong’ characteristic.
3. German Shepherd
A breed of dogs that originated from Germany, the German Shepherd can weigh as much as 70 to 100 lbs. Known for being intelligent, confident, alert, vigilant, and fearless; the police use them for their K-9 units. However, caution must be exercised with Shepherds as they can become overprotective of their family and territory, and if not socialized correctly; can lead to attacks.
Rottweilers are a powerful breed with well-developed genetic herding and guarding instincts. As with any breed, potentially dangerous behavior in Rottweilers usually results from irresponsible ownership, abuse, neglect, or lack of socialization and training. Nevertheless, the Rottweiler’s strength is something that should not be overlooked.
The term ‘pit bull’ encompasses certain breeds of dog from the American Pit Bull Terrier, the Staffordshire bull terrier, the American Staffordshire terrier, and the American Bulldog. Originally bred for baiting bulls and bears the majority of their breeds were also used for dog fighting in numerous parts of the world and is considered as the most dangerous dog in America.