Everything you do with your pup or adult dog is essentially training. It might not fit into the category of formal obedience work, but it is training nonetheless. For example, when you come with your dog to the front door after a walk, does it sit and wait for you to open the door, or does it scratch the door and whine to be let in? Both of these actions are trained behaviors. The difference is that the dog in a sit position was trained by you and the dog jumping up and down and ruining your front door was trained by itself.
This is why I frown upon leaving a young pup alone with an older dog to ‘keep each other company’. If the older dog has some poor habits, you can be sure that within a few days, the pup will have learned them. Dogs learn by watching and then become conditioned through repetition, even if self taught. If you let a dog act like a dope every day, pretty soon, you have a problem on your hands that appears impossible to handle.
Forget about all of this ‘dog whispering’ garbage. Dogs learn to do bad things by doing bad things, over and over. It’s not more complicated than that, I assure you. So, conversely, if you want to undo bad behavior in a dog, you need to recondition the dog, repetitively, daily, until the dog behaves differently. I emphasize the word ‘you’, because you are the only individual who can change the dog’s actions, behavior, habits, etc.
I have reconditioned four and five year old dogs, as well as puppies. Age is not as important as the handler’s willingness to repeat the exercise as often as needed to get the desired result. That means every day, four or five times a day, and so on. You can incorporate obedience and conditioning into daily routines. For example, training the ‘sit’ command can be done when coming to the door (both inside and out), feeding , entering and exiting the crate, car and so on. After two weeks of this, the dog will get the idea that it has to sit before getting the reward (whatever your reward is for that dog).
Do not expect a dog to change because you yell at it or tell it ‘no’ a million times. That is not dog training. That is you being trained by your dog to react to its behavior.
Actual dog training is for real life situations and is done in real life.
Think about it.