So you want to change the name for your dog. But your dog already got a name now you have to train him with a new name and it will take much time to you for getting familiar your dog with a new name. So just start calling your dog with the new name and stop calling the old name of your dog. However you dog will feel strange and probably might not respond you well because you are calling him with a new name. So this is the only way you can use to getting familiar your dog with the new name.
There is no other way you can tell your dog that his name has changed because you can not speak with your dog. You can call him by new name by using the signal to attract him towards you. Another you can use if you are unable to make understand to your dog that his name has been changed. You just take him to some psychiatrist so that he can teach him and make familiar with a new name. So this is the way you can try to tell you dog a new name so that he can respond you when you call him by his new name.
There is no other way you can tell your dog that his name has changed because you can not speak with your dog. You can call him by new name by using the signal to attract him towards you. Another you can use if you are unable to make understand to your dog that his name has been changed. You just take him to some psychiatrist so that he can teach him and make familiar with a new name. So this is the way you can try to tell you dog a new name so that he can respond you when you call him by his new name.