Not that I normally bring my dog along but I put insulation under the carpet back there on my car. Acts as a sound/heat insulator. The insulation stuff I got is the same stuff as those foil windshield heat shields. Bought a roll about 50ft long x 4ft wide for $20 at a automotive swap meet then cut to shape. (the excess we didn't use in the smarts go under the carpet in some of our other cars)