I don't have a dog but I use the middle row like a truck bed sometimes, throwing whatever rusty metal and garbage I need to haul around back there. I don't want to mess my new leather up so I've been using a moving blanket for awhile. Figured I'd step it up a notch so here's what a $18 waterproof pet cover from Amazon looks like. Fits pretty well and the seat belts even line up if you use those, I didn't pull them through. Easy on easy off, maybe not the quality of SOR tuff duck but $200 cheaper anyway. I'm pleased.
http://www.amazon.com/gp/product/B00QHC02EY?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
http://www.amazon.com/gp/product/B00QHC02EY?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00