the Malinois, while a wonderful dog for the "dog addicted" may be a challenge for your situation. A healthy German Shepherd would be able to do exactly as you want, and may be easier to live with. A Malinois is not satisfied with physical activity alone, and unless you, your wife, and both your children run, you will not be able to do enough alone to keep his/her mind engaged. The perfect home for a Malinois is with someone that enjoys dog activities that utilize both body and mind. Are you interested in agility? Dock diving? Obedience and Protection? Nose work? There is a ton of stuff you can do, if you have the time and inclination.