Any dog who endures an abusive, neglectful, or life-threatening situation can become aggressive. Does that mean these are bad dogs? All dogs can become aggressive if not trained or treated properly, but certain breeds tend to be more frequently involved in serious dog attacks and even human fatalities.

1.Pitbull
Pit bull is a very muscular stocky yet agile dog that is extremely strong for their size.pitbull also called american bull terrier or pit bull terrier originated in England scotland and Ireland during the 19th century. female american pitbull terriers are about 17 to 20 inches in size while the males are about 18 to 21. pitbull known for their muscular bodies and strong Jaws these dogs have gained a notorious reputation they can make loyal.in case of these dogs attacks against people can only be a result of a bad owner and lack of obedience training this dog was not bread to attack people and it doesn’t have innate aggressiveness against them this friendly dog has a largely undeserved reputation of a fearsome killer even though such measures can seem overly restrictive this breed is banned in several USA states and a few canadian provinces and some other countries.

2. American Bulldog
American Bulldogs are the descendants of English Bulldogs that were originally for the sport of bullbaiting in England.American Bulldogs are strong, agile, and full of energy. They need to get outside regularly for walks and adventures but those who enjoy spending time indoors more may not be a good fit for the breed.American Bulldogs can be sweet and cute, but they can also exhibit a few less-pleasant behaviours.breeds like the American Bulldog have short hindlegs and bulky, heavy bodies.

3. Rottweller
The history of the Rottweiler dates back to the Roman Empire when they worked as herding dogs.The Rottweiler has served many roles throughout the years, such as search and rescue, police, and guard dog.The Rottweiler is a strong, muscular breed that weighs an average of 85 to 133 pounds.The Rottweiler requires specific medical care just like any other breed. They are more likely to have hip and elbow dysplasia as well as heart problems.

4. Cane Corso
Cane Corsos are a large dog breed. This Italian breed was created to be a guardian dog. The original Cane Corsos were likely even larger than the dogs we see today.They were used in battle and would help.Cane Corsos are a very large breed and could accidentally injure a small child.Cane Corsos are a large breed of dog. Males are between 24 and 28 inches tall with a weight that is proportional to their body, typically between 99 and 110 pounds. Females are slightly smaller at 23 to 26 inches and generally weigh between 88 and 99 pounds.

5.German Sepherd
German Shepherds are extremely intelligent, loyal, and excel in roles as family protectors. Reactive barking in German Shepherds is often a response to perceived threats or unfamiliar situations. Understanding and managing reactive behaviour in German Shepherds is important to ensure a balanced relationship.
Guarding their territory is instinctual for German Shepherds.When a German Shepherd feels its family or territory is under threat, it resorts to barking as a means to alert and deter potential dangers.
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