I have 4 dogs, and walk them in pairs. I can't even image walking all 4 at once. Group 1, I use a couplar or splitter, one leash 2 dogs. It leaves one hand free to carry a squirt bottle (we have a lot of neighbors who let their dogs run loose). Group 2, one dog heals on the right one on the left. I'm still working on getting 1 not to pull in this group so the couplar isn't an option yet. Luckily these 2 are my friendly ones so loose dogs aren't as big of an issue.