Tonka is adorable!
Did you get him when he was only 7 weeks old? If so that's too early to be taken from the mom, yorkies should stay with their mother until 12 weeks old. They learn a lot from their mother in that time period, and behavior problems often arise when they haven't had that time needed with their mothers. If you do have him that young lots of people on here have been in similar situations and will be able to give you advice.
I love the name too.
Also, the term "teacup" is a marketing term "breeders" will use to sell smaller than normal yorkies so just be careful about going back to that breeder again. Technically there is no such thing as a teacup yorkie.
Welcome to YT!!! You'll learn so much here, I know I did!!!!
