I have grown up with dogs for over 20 years now. I currently have a crazy two year old black lab mix named Cooper. If your dog has high energy, not to worry, I have experience! THANKS COOPER! :) I think the wonderful thing about dogs is that they are an extension of their owners. It sheds a light into what their daily life might be. There are certainly circumstances that make the statement untrue, but if you've had the pup since they were eight weeks, then it more than likely fits. Cooper always wants to do the right thing, but is afraid of his own shadow... What does that say about myself and Emily(my wife)? :-) I love every dog I come across. Respect them and they MAY just respect you back! They keep us honest to the notion that respect is given, not earned. Any shape and size is great with me. I may lean towards "the bigger the better" but I know there's a place for the little guy too! I look forward to a bit of exercise for my own health, and the chance to get to know my community better. One pup at a time! :)