[capt_noonie]

We have some on here that had pups around 5 lbs and they are now about 16-18 lbs. While the standard is 7 lbs and under, there definitely are larger yorkies. We affectionately call them teapots. It is a possibility that it could be a silky or yorkie/silky mix. They are very similar breeds. Silkys are larger and with more of a longer muzzle and triangular head. Yorkies are a little shorter in the muzzle and a bit more rounder head.

Usually I would be weary about having a 7 week old puppy but since he is on the larger side I wouldn't worry, as much. Still be on the look out if he does not eat or gets lethargic. Pups this age should be eating every few hours.

Another thought I had was perhaps he is older than you have been told. Some people only want to get a pup younger than so-and-so age. So it's possible he's older thus larger and the breeder told you a different age. But usually unscrupulous breeder would lie and say a pup is older than it really is to make it seem like it is very small.

And yes, they do lighten up as the age. It usually takes about 3 years for them to get their full adult coloring.