L.Lapan - you are completely correct on harnesses. Chalk it up as a rookie mistake for me. We went out and got harnesses for both Jake and Roxy and they both handle them very well.
That's very sweet that some of you were worrying about Jake. What a supportive community this is!
For those wanting pictures, check out these cuties!
imgur: the simple image sharer
I bet you can easily guess which is Roxy and which is Jake!
(Sorry if this is a double-post... for some reason, my posts aren't showing up).