It is hard to say that there are specific breeds of dogs that are dangerous. The way that a dog turns out depends on how the dog is raised, how he is treated, and his living conditions. That being said, there are some breeds of dog who are more prone to aggressive behavior than others. This doesn’t mean in any way that these breeds are going to turn into aggressive dogs with a mean streak.
It just means that if they are treated poorly, they will be more likely to become aggressive than other breeds of dog. Under the right conditions, the dogs on this list can be loving, happy, family pets. That said, The Journal of the American Veterinary Association (JAVMA) conducted a study that took place over 20 years to determine which breeds were the most dangerous based on bite fatalities.
Most of the dogs on this list were also found in the final results of the study.