OOOOOOH yes, Riley was so scared of everything and everyone, when we got im, so now that he found his confidence, he thinks he has to show all the big dogs that he is one of them....He will "puff up" to every dog that comes around , no matter what there size,...its soooooo halirous...we go for a walk and he does that little yorkie but shake thing. (ya you know what im talkin about

) but as soon as another dog shows up, that stops, and he gets denfensive, like he is saying,,,"go ahead say somehing about my but shake, I dare ya"....lol.....the ears go up the front legs lock and then comes the low growel,,,I have to keep saying out of the corner of mouth,,,"Riley shut up, or your gonna get used for a tooth pick!..