Cushing Square gets going early. Coffee, dogs on leashes, and somebody's lawn already being cut two streets over — that's Mow Dog Landscaping Co, working Belmont at the hour when the grass is still cool. Mowing, edging, hedge and string trimming, mulching, leaf cleanups in the fall; then the blade goes on and the same streets get cleared driveways, shoveled walks and salted steps. Belmont is a town of short front lawns and narrow drives, which means precision counts for more than horsepower. Get the edge right and the whole yard looks finished. Get the drive open by seven and the day just starts normally.