if they are refusing to walk, it probably means they haven't totally adjusted to being outside. How often have you been taking them out? I would try to hold off on the actual walking part of being outside and try to find a quiet place to sit with them and let them sniff around and play. Lots of REALLY yummy treats as well. I'm not sure your yorkies like to do this too, but maybe bring out a piece of paper for them to shred while they're outside. Just so they become comfortable and associate being outside with good things. After a little while of this (it really shouldnt take too long) try taking a few steps forward and coaxing them to you with yummy treats. Don't drag them along, they'll just start associating outside with the negative. Hope this helps a little
