Socialization is very important in forming the temperament of the adult dog.
Just what does "properly socialized" mean when referring to a puppy or an adult? I've asked dozens of pet owners and breeders and the answer generally comes down to "getting the puppy out" to a lot of places. Unfortunately, very young unprotected puppies cannot go "out" to a lot of places but it's important for those pups to have exposure to the new and different parts of the world in order for them to develop into well adjusted adults. So to help in exposing the pups we follow the rules of 7.