The law defines a dangerous dog as one that: Has attacked and injured or killed a person, farm animal, or pet without justification, or Has behaved in a way that causes a reasonable person to believe that the dog poses a serious and unjustified imminent threat of serious physical injury or death. In other words, the dog must have a prior track record of dangerous conduct. Unlike other states, you cannot prove a dog dangerous because they have acted aggressively. A reasonable person must have at least feared imminent physical severe injury. This requirement means you must know about the dog that injured you or your loved one, or be able to uncover records supporting a prior history of aggression. In addition, you must also show that an ordinary person will reasonably be afraid of imminent serious physical injury. A dog growling and baring its teeth may not be enough to be considered a fear of imminent injury by a reasonable person.