Dogs are often seen as man’s best friend, but not all breeds are created equal. Based on research, some dogs are considered more dangerous. While any dog can bite you and cause personal injuries, some dogs have more of a propensity to do so. The following dogs, therefore, have a reputation, statistically, for being more aggressive or violent. Dogs may have aggression issues if they’re not obedience trained or they are not socialized at an early age. They may also tend to bite more if they have little interaction with their owner. D...