Oh he's just a little guy ....
He'll get used to you
they don't know their name for a good while
and that's up to you to teach him
they really don't wag their tail for another few weeks
Mine just started and they're 15 weeks now
As far as the growling
He's probably playing .... Yorkies are vocal dogs
One of mine growls everytime he plays with his toys
You'd think he was the most vicious dog on earth
But he's actually a completely sweet lovable dog
You're jumping the gun by a mile
Love him play with him and train him well
you'll see he'll be great