Gary - YES the kitties DO know what it is for now. Emily and Eliot have not tried it and are not interested - but I go towards the door, ask who wants to go for a walk, and Robbie and Lizzie BOTH climb right in!! They really do enjoy it They prefer riding togther - each alone howls awhile before settling down so I only push them together.

Dylan does not get in by himself, but is happily put in by Meowmie and also seems to enjoy his strolling - settling down nicely and watching the sights.

I leave it out in the living room and anyone can climb in and use it for a bed - which Lizzie and Robbie will do - mostly Robbie

janelle - your last picture is the one I bought. The benefit of the first baby stroller looking one is that it is easily collapsable. Mine is also, but first it requires the three metal supports to be removed (there is a pocket for them) Then it collapses nicely.