After twenty years of owning successive dalmatians (who pull A LOT) and trying various collars, halters and harnesses, I simply cannot believe that I now have a dog who does not pull! Our Dalmatians have always hated halters around their nose but our current dog seems not to mind this harness at all. We tried another harness which went under her armpits but it rubbed them - this harness does not seem to rub at all, partly because the dog simply doesn't try to pull in it but walks along calmly by your side! I know people will think this is too good to be true, but it really does seem to work - and even if she is startled by something and pulls away she can't get out of the harness and I can still control her. I really recommend giving this a try to anyone who has a real problem with their dog pulling.