Yorkies were once a bit bigger than what the standard states now but they were not 20 pounds as a rule. Yorkies that have a carefully planned genetic background will usually produce fairly consistent sized dogs. The puppies that are produced that are not as close to the breed standard will be spayed or neutered and sold as pets. That way the line becomes more and more consistent while producing stock that is close to the standard.
There are a lot of people out there who are breeding with no knowledge of genetics but seem to only care to make money on these dogs. They will put two dogs together without any knowledge of their genetic background. They have such a huge gene pool that there are all kinds of possibilities concerning what the breeding will produce. There is just no way they can give you an accurate idea or range as to what size the pup will be or the quality of the dog's characteristics or health.
There are many here on YT who were promised a 4 to 5 pound dog that ended up with a 8 to 15 pound dog. If you want a specific size or look in a dog you need to find a reputable breeder that has a good history of producing consistently quality stock from superior lines. Many of these people will sell their pet stock reasonably. I have seen puppy mills advertising puppies of very poor quality for more than what you would pay for a show prospect puppy. Buyer beware. |