Have you considered a harness? Apparently that's what those leashes are called.

We were over at the Doans' house for their girl's birthday (you might remember them from the wedding-Ike and Tyler were playing together) and Linsy asked me if I had gotten a harness for Mel.

By the look on her face, I think "A what? Oh! You mean a LEASH??" was the wrong thing to say...