to work or not to work...

When you say working like a dog, what does that mean? My dog sleeps on the sofa til noon then moves to where I am, stretches a little then goes into the second napping phase. If someone drops by she musters up the energy for company, then falls into a heap after the visit. Where does the work part come in? When I work, well lets just say it doesn't involve napping. It involves work and a lot of it!