While training a dog, the handler can make a number of different mistakes.
First and most important mistakes new dog trainers make is that they think that a dog, like a human, can effectively respond to their words. They can sometimes start to try to talk the dog into doing something or to scare the dog into doing a command. In reality these things only slow down the speed of dog training. Dogs can’t understand many words, and majority of what people say flies around their ears. What their can understand is dog trainers tone of voice, and mood.
There is a good saying, that mood of the dog flows directly through leash from his handler. If the handler is thinking about quickly finishing the exercise and getting to do something he likes, the dog will not be a willing trainee at all. One needs to think of the result of training that you want out of your dog, and then slowly move toward those set goals with good speed, not rushing the dog.
If a trainer works by scaring the dog into doing every command, what you will end with is a scared, shy animal that will shake from every quick move by his handler. This is very ineffective because the dog will have no loyalty to the handler, and will do anyone’s command due to fear of punishment.
Another common mistake is that most dog trainers don’t pay enough attention to their tone of voice while working with the dog. As said before, dogs don’t understand words, they associate them with things, and tone of voice is the best tool to help the dog associate. For example “No” or “Off” should be told in deep tone of voice that shows disappointment in the dog. While a command that requires the dog to do something like “Sit” or “Heel” should always be said in high pitch happy tone of voice. If a trainer uses the same tone of voice for all commands, then the dog will have extremely hard time knowing what the trainer wants.
One more mistake new owners often make is to repeat the command multiple times thinking it will make the dog comply. In reality it only reduces the ability of dog to learn the command. Repeating the command multiple times in order for the dog to do it is very counterproductive. Try your best from the first training session to teach your dog to do a command from the first try.