It most certainly sounds like a problem and it should definitely be corrected. Kujo should not be allowed to behave this way. I really don't know for sure how you should do this but I think cyber-sibes had a good idea about seeing a trainer or maybe a behaviorist. You should be the leader and have control over Kujo whether it be in your house or on walks. I have problems with Katie and Tori pulling when we take walks and it was very difficult to walk them together. I finally caved and bought prong collars. They have helped me tremendously. Recently I have stepped up my dog walks and practice very hard in the way we walk. I DO NOT let my dogs walk ahead of me what so ever. They are not allowed to sniff the grass or take a pee unless I give them permission too. If we see a dog or cat on our walks and my girls get antsy and start getting excited or whining cause they want to go after it. I give them a sharp tug on their collars to let them know that the behavior will not be tolerated. We are not perfect yet but my girls have come a long way. I am amazed at the difference that has come about since I decided I would be in control and not them. I also want to say that I watch the Dog Whisperer alot and that show is what has helped me on my walks with my girls.