It is not exactly a walk in the park to domesticate dogs. They are perhaps the easiest and most trainable animals out there. But, the bottom line is that dogs really require proper and methodical training before you can own up your pet story to be a successful one. Foremost, you got to have the courage and patience to train your dogs. As one online dog training course says, you don’t have to be smart or philosophical when training a breed of dog.  You just got to have the perseverance. In my experience, I already tried at least five different breeds of dogs. Man, what applies to shitzus may not be necessarily the case with chihuahuas.