OMG he is so cute- I can see why you fell in love. Poor little boy looks like they're choking him to get the picture though.
I don't know the story of Turtle and Ducky or who their owner is. Would the owner be upset if you backed out? Six yorkies would be too much responsibility for me but only you know what is best for you. Good luck!
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"If you have men who will exclude any of God’s creatures from the shelter of compassion and pity, you will have men who will deal likewise with their fellow men." — St. Francis of Assisi, 1181-1226