With canines, the certainty of a new meeting going well is everything but certain. Even though we're lovable, huggable, extremely cute companions to you, your family, and your friends, we are still animals and that needs to be kept in mind when introducing us to unfamiliar humans as even more importantly, when introducing us to unfamiliar fellow canines (and even worse, unfamiliar cats).
You see, many of our canine ancestors were either bred or trained to be guards or protectors of our pack members (that includes humans, who dogs consider a part of their pack) and territories (the dog's residence, whether that is inside the home or the perimeter of the property). With this in mind, you can probably figure out that even though we want to be friends with everyone, there is a chance that we can't be just because generations of breeding and training has instilled in our inner wiring that protection/guarding is our job, so there is a possibility that confrontation is just second nature to us.
We're not trying to scare you away from wanting to own a dog or to try to befriend a dog, we are just trying to educate you in hopes of preventing any sort of accident due to not taking these points into consideration. When you think about dogs that may have issues in a social setting, also keep in mind that just because a dog is friendly with humans doesn't mean that it will be friendly with other dogs (and vice versa). Some dogs are great around all humans and all dogs. Some dogs struggle to interact with other dogs. Some dogs are great around certain dogs, but not strange dogs,. And some dogs are great around some humans, but not unfamiliar humans. This doesn't mean that the dog is a 'bad dog', it just means that for some reason, this specific dog just has it's own reasons for reacting as it does.
How do you prevent an 'incident' between your dog and a human and/or other dog? You prevent incidents by being responsible dog owners and taking every measure necessary to ensure that the interaction between your dog and another person/dog is comfortable/the least bit stressful in the beginning introduction. If you're trying to introduce your dog to an excitable dog or an excitable child, maybe wait until that dog or that child has calmed down before continuing with the introduction. If you're trying to introduce your dog to an unfamiliar setting (a new dog park, a home the dog has never been in, etc.), try to introduce the dog to that settle with the least bit of distractions possible (early morning when few folks are at the park and/or when the unfamiliar home is empty/quiet).
For a 'real-world' example, we're going to our owner's Mom's house today to hang out and what our owner does to prevent any sort of issues with his Mom's dogs are to take us in the house and let us sniff around for a second and then go outside and sniff around before they let his Mom's dogs out to play with us. This way, every dog has a chance to settle in for a few minutes knowing that we've arrived to visit instead of just opening the front door and having chaos ensue with four big, excited dogs greeting each other instantly.
We hope our comments help you if you have struggled with canine interactions in the past and/or are concerned about interactions in the future with your dog and other people/dogs. As always, if you have any questions or comments, please post them and we can address them because as you know, we're very intelligent canines and there is really not any question that you could come up with that we cannot answer in a satisfactory manner.
Now go out and enjoy the day!!