Suppose that you have three dogs ready and willing to walk but just two arms? Who gets left behind? You could walk all three dogs on one leash and have a free hand to spare. Here’s how. Pet supply stores sell handy leash attachments called couplers  for two dogs and triplers for three. These are short, nylon straps with snaps for dog’s collars and harnesses. One leash connects to the coupler and off you go! Your three dog team may be a little ragged at first but they will get used to this arrangement sooner than you think. through a kind of canine peer pressure.  They’d rather walk than race anyway.