Dog crates
One issue might be the "verticalness" of the 2nd row. In my 07, the second row has a "vertical" position that nobody has ever actually used and looks really uncomfortable, but these days I don't ever need to carry anything bigger than a 100 (weimaraners to affenpinschers).
While I wouldn't do wire crates in the rear of the car (not with two right next to each other like that - invites problems) you might consider some of those soft-sided PVC-supported crates, which give full enclosure but have very straight sides.
I have to admit, when I had weimaraners we were taking to shows, I owned an LX470 (the rear seats had to be disconnected and removed) and an Excursion (V10 gas, drove like a truck, I hated its busy ride on long trips but we could load the crap out of it and still have room for five - or more). Are you taking a few pets on a cross country trip or going to dog shows or ... ?
STP
All 3 dogs ride very happily in the huge cargo area



