We bought this online and thought we'd see how it worked. The two dogs we have, a lab/aussie mix and a Corgi/chow/etc. mix adapted to it very quickly and will walk side by side quite nicely with each other. If one of them does stop or start to go off into his or her own direction the coupler is somewhat elastic and cushions the jerk the the other do would get. It is very sturdily built and the connectors work perfectly.

I would highly recommend this for anyone who has a couple of dogs with minds of their own that doesn't like to have their arms lengthened when the dogs see two different things to go check out.

Pros: Keeps the dogs headed in the same direction. Doesn't jerk the other dog when one decides to go a different direction

Cons: None