Turbo, A few years back a friend and fellow racer brought his unneutered male dog to Speedweek and I noticed he was laying in the shade with bright red cajones (if you will) as a result of Sun rays reflecting off of the salt.
Unless you have booties, eye protection, ear protection (noise) and ... er, uhh, "underslung protection", I would leave the pooch home. Dogs do hot do well in heat, and need to be well hydrated and misted with water constantly in the Bville environment. Bob