I agree with this post. However, my 5 month old yorkie who has yet to make the 3 pound mark, is very sturdy. I think you can have a light yorkie, but the bone structure and build has a lot to do with it as well. My vet is always going on about Fergie and her healthy, non-fragile bone structure and her ability to stay petite. She is great around my friends children and other dogs. Of course I am very careful, but my paranoia has seemed subside a bit due to her lack of "fragileness" (is that even a word?
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Just because a yorkie is little doesn't mean it is unhealthy!
Jessica