Although most domesticated dogs are friendly toward their owners and the people they know, it is always important to remember that dogs are still animals. Although the majority of dogs in North America are domesticated, there are still feral (wild) dogs around and when animals get scared or feel threatened they often bite. Many people consider themselves to be dog lovers and have no fear whatsoever of any dog either wild or domesticated. They feel that they can approach any dog and get that dog to like them. They think they have some type of special relationship with any and every dog. This is flat out foolish thinking and has NOTHING to do with how nice that person is, or what kind of a dog lover they think they are.