First, let's set the scene: you and your pup are walking along the sidewalk and everything is peaceful and relaxed. Suddenly, up ahead another person is coming your way with their pup. Your dog starts to bark excitedly and lunges towards the other dog. Not only is this type of behavior unseemly, it could lead to someone or someone's furry friend becoming seriously injured.
Now let's look at it from a different perspective. You and your pup are walking along as above, but this time your dog calmly walks by your side as the other pair walk by on their side of the sidewalk. Doesn't this seem like a much better scene? It can be yours as long as you are willing to put in the time to train your dog to ignore other dogs. You can teach a dog of any age to behave in this manner as long as they are old enough to have mastered the basic commands.
In this case, you are training your dog to behave in a specific manner under certain circumstances rather than teaching him a new task or chore. While you may need to use some form of command word in the beginning, the intention is for your dog to ignore other dogs without having to be told. This is a very important behavior for your dog to learn as you need to be able to take for walks without worrying about his behavior. If you can't do this, it becomes far too easy for your dog to not get the exercise he needs.
You should teach your dog to ignore as young as possible, preferably while you are training him to walk on a leash. But at the same time, you can train an older dog to behave on walks, it might just take a little more time. No matter what age your pup happens to be, learning to behave around other dogs could save him from serious injury or worse if he ends up in a fight.
Not much is needed in the way of supplies when it comes to training your dog to ignore other dogs. But more than anything else, you will need the time to go for walks every day and preferably more than once each day. But you will need these things:
Remember, training your dog to ignore other dogs is more about time and patience than anything else. Also, the more you jerk on the leash, the more excited your pup will become. The calmer you remain, the more quickly your pup will calm down and back off.