Took my choclate lab out for a 4km ride actross town yesterday to watch my son play soccer. I am pleased to report that riding with your dog is a good idea if you can control and trust your dog. Labs are about as smart as a sack of stones, but they learn quick what you want them to do. She was a little excited and tried to pull and run in front of me when we started, but I patiently stopped and told her 'no' and 'heel' and only started riding again when she was right beside me. After about 2 blocks she was trotting alongside perfectly. She ran slightly ahead the two times we saw squirrels, but a quick tug on the leash and a 'no, heel' and she was back at my side.