Now I don't know how long Harley has been Harley ...but he does say his name ...I would like to change his name to Ghost ...I think it fits him and it fits my use of Game of Thrones theme I got going in my home ...I would think if they are like any animal the more often you use it the more they take to it ....Ill run it by slowly at first and then use it all the time with treats ...I would think like any word you use it more he will get use to it and maybe will start using it himself ....it worked with Tyrion ...what do you guys think ?