The official (AKC and Yorkshire Terrier Club of America ) standard for the breed is under 7 pounds. It does seem most are 5 to 7 pounds. That being said, there are some great pups who are over 7 pounds, they are just not breed standard.
Small Yorkies (of which I have some experience) are known to often have more health issues. That means you need to get a good health contract when you purchase. Also they are fragile and can get injured more easily so have to be more careful with them. If another dog or animal gets ahold of them it is usually a disastee, so you have to be vigilant.
You can't show or breed the tiny ones so keep that in mind, and they really need to be healthy to be spayed.
Breeders can never guarantee what the weight of a pup will be until they are older so getting a young puppy is going to mean they may get bigger than you think. MOST IMPORTANT - no reputable breeder will intentionally breed "tinies". So beware of those that do. Reputable breeders know the issues these
little ones have and do not intentionally breed those problems into any dog.
Good luck with your search.
__________________ .  Cali  , and Cali's keeper and staff, Jay No, not a "mini" Yorkie - She loves to motor in her Mini Cooper car |