Dogs are social creatures, and often display a range of emotions during interactions. Training your dog to be oblivious of other dogs when walking may be quite a challenge. Even if your dog responds well to recall, continue leash training with them in order to reduce their interactions with people or animals who might not be open to the idea. Besides this, you can always use treats or quick recalls. However, you should know that interacting with other dogs builds socialisation skills in your dog, teaches them to learn signals from them, and feeds their emotional intelligence, for their overall well-being.