Calmly passing an excited dog on a walk at Creve Coeur Park

You can learn a lot about your dog by how he/she responds to different kinds of energy from other dogs.

What you see in this short video is Kinjo the Akita passing a dog with an excited state of mind. That dog isn't being aggressive, it was just in an excited state that wasn't controlled by their human. The human had their dog's distance controlled, but they did not control the dog's state of mind. When the dog tried to leave their human to rush up to Kinjo, the human just controlled the distance their dog could move with the leash, but never addressed the dog's decision to leave nor it's state of mind.

This isn't a huge deal, as the main thing is to not allow your dog to rush up to other dogs, however their dog wouldn't even be choosing to leave their human nor get overly excited if their human had been consistently correcting their dog the moment it began zoning in on other dogs and trying to leave them. If you correct the dog the moment it's mind began to stray that direction, it will learn to stay calm and stay at your side.

This is not meant to criticize this person, as many people don't even control their dog's distance. I'm appreciative that they at least did this much and their dog didn't run up on Kinjo. However, it does work as an example of a dog that goes into an excited state of mind and isn't corrected. You then are stuck dealing with a pulling dog.