I find the biggest struggle with raising them is the potty training. Faith is about a year and a half, and is not fully potty trained. Another very hard part of having yorkies is when one of them gets sick! I just can't stand it when one of mine is under the weather and it's such a worry.
Yes indeed...they ARE addicting. I can't believe I've got 3...they are like potato chips and you can't have just one!