Tosa has been known in Japan for almost a 1000 years by now. He was bred as a fighting dog, so he’s probably not the best choice for an inexperienced owner. This breed is normally a well-mannered and peaceful dog for his family, but it has already shown aggression towards other dogs in some cases. He is reserved with strangers, but not necessarily aggressive to people. This breed is definitely a fearless protector and guardian dog. Tosa can behave well with small children if he gets very early training and socialization, but rough play should be avoided because of his fighting instincts. Tosa is intelligent and very easy to be trained. He has a low energy level. The average weight of this breed is 100 to 200 pounds, and its size is about 22 to 24 inches.
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The name Boerboel (pronounced Boo-r-bull), AKA Mastiff, means farmer dog. They used to be used for protection against dangerous humans and animals in South Africa in the 1800s. This breed is known as one of the most powerful dogs in the world. When they bite, they are able to exert more than 450 pounds of pressure per square inch. However, with early socialization and proper training, they can be taught to behave really well even with young children. This breed is very intelligent and very easily trainable. They are extremely loyal and very protective of their pet family and home; also, they are amazingly calm and confident when they do their guard job. This large breed’s size varies between 24 and 30 inches and weighs 120 to 200 pounds.
The Cane Corso is an intimidating breed at first glance, with a muscular body and large head. Corsi come from Italy, where they were employed largely as guard and hunting dogs because of their power, courage and willingness to work. A very intelligent breed, these dogs are easily trained and versatile, and at the same time are intensely loyal to their humans. Corsi are great with children, make excellent family pets and tend to be protective of their families. Despite the Cane Corso’s size and strength, Corsi have a medium energy level.
The Neapolitan Mastiff is a noble, astounding dog. This breed was originally bred in Italy and was commonly used as a guard dog, meant to deter intruders with its intimidating look and size. Quick to learn and excellent with their families and children, the Neapolitan Mastiff is protective and devoted, generally has a low energy level, and has abundant, hanging wrinkles and folds on its head. These dignified, powerful dogs weigh between 130 and 155 lbs. in adulthood, and thrive when given plenty of property to roam and defend.
Rottweilers were originally bred to be hard-working, protective dogs. These powerful dogs have incredibly strong jaws and excel at police work, herding, and watch-dogging, as well as obedience. Rotties are exceptionally smart, which makes them easily trainable, and they are usually very happy, goofy dogs. They tend to be protective of their families, but make loyal and affectionate pets. Rottweilers are large dogs, weighing in on average at around 100 lbs. fully grown, and are fairly active and like to exercise.