This is a really hard thing for some owners to accept, but it’s so important. We all want a social, easy-going dog that gets along with everyone. But unfortunately, not all dogs want to play with other dogs. If your dog is showing signs of discomfort (trying to get away, nipping, barking), you need to respect that and remove them from the situation.
We can definitely train our dogs to co-exist around other dogs and to be calm and respectful, but we’re never going to force dogs to interact. That’s a recipe for disaster. So a little tough love here: stop forcing your dogs to be social just because you want them to be social. Let them have their space and interact if and when they are ready.