I would never put anything around Toto's neck! We too had a problem trying to get her used to her little harness .... she would flatten out on the floor and we absolutely could not get her to stand! When we had the problem with her darting out the door, my husband found her a wonderful personal trainer who came and worked with her at our home. He was like magic! He had her trotting up and down the driveway in one short session like she was in the show ring!! She always walks on our left and always at a pace that leaves a little slack in the leash. She doesn't stop and sniff and explore ... those tiny, short little legs are just like they are on a mission! If we slow up a little and the leash gets a little taught, all we have to do is quietly say "Stay with me" and she matches our pace! These are the smartest little creatures I have ever seen ... I would be very careful who and how they are trained. Just like Yorkiepower said ... trust your instincts ... if it doesn't feel right, take your baby and leave! Good luck ... let us know how it goes!