I'm a chronic insomniac and the doctor has suggested that I take exercise. The only excercise I actually enjoy is walking, but I rarely go because no one else in the family shares my enthusiasm. In a drunken moment last night, I suggested getting a dog as a walking companion. In the cold light of day I'd like to consider whether this is really a sensible idea. I'd love a labrador, or probably more sensibly, a labrador cross. How much excercise would a dog like that require? I work full time, how long can a dog be left unattended? How much would a big dog like that cost to feed? What about vets bills? Would we need an estate car? I've never had a dog before and any words of wisdom would be gratefully received.