One of the obstacles to proper socialization is a misunderstanding of the details of the process. Specifically, many of my clients have told me that they didn’t worry too much about socializing their new puppy because they have another dog at home, and the puppy and that dog get along great. There is an assumption that if a dog can interact properly with one dog, they can interact with all dogs. Regrettably, this is not true.
Exposure to many dogs in the early months of a puppy’s life teaches the puppy to be comfortable with unfamiliar dogs in addition to teaching him to be comfortable with the particular dogs he has met. While meeting the other dog at home is a great place to start socializing a puppy, it is unwise to stop there. Many dogs grow up behaving beautifully around the other dog in the family but are totally unable to cope with any other dogs. That’s because such dogs only had the opportunity to learn that the dog at home is a friend, but never learned that any other dog can be a friend, too. Judging the dog based only on the behavior around that one dog paints a very incomplete picture of his social skills.
An analogy is to consider a girl who is very relaxed and comfortable around her brother and to assume that she’s comfortable around boys. In reality, she may be shy, tongue-tied or completely awkward around boys. Her behavior around her brother is an exception that is out of step with the real pattern
Many well-meaning dog guardians forego the usual suggestions to socialize a puppy, and they do so because they erroneously believe that one dog at home (or even several) will provide adequate socialization. Not so. Puppies need to meet a lot of dogs in order to be able to interact in a socially appropriate way with unfamiliar dogs throughout their lives and to feel comfortable doing so. If a puppy meets lots of dogs early on, the lesson that all other dogs are potential social partners is more likely to be learned and to be applied to all dogs.