My two are VERY needy in my opinion. I think a Yorkie is more needy than dogs I have had in the past. With that said, I wouldn't have them any other way!
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If you will be gone a lot, I don't think a yorkie is the best breed. They love to be with you all the time. My two get the saddest looks when I leave and don't take them.
Good luck in your decision.