Anyone elses yorkie sometimes, jump up and dart away when you come close to pick them up or pet them? Coco loves it when I hold her or pet her but when she's in her playful mode, I sometimes have to chase her. So for example when I'm teaching her a trick, I will say "Coco Down" and she does, then when I want to reach over and show her how to roll over (or whatever the trick), she jumps up and darts away and then runs back and forth as if to tease me. She doesn't do it all the time but sometimes. What does that mean? Is she just being playful and wanting to play, "I want my tired mommy to chase me around"? Or is she afraid of something?