"I live in Provo and have two large dogs. They have made my back yard dirt. To fix this, should I sod or hydro seed? I want a fix before winter. I also want to know what kind of grass is good for having dogs on it."

You are facing a difficult challenge. Dogs, and especially large ones, can be very tough on a lawn. I would recommend sodding the area, especially this late in the season. If you were to hydroseed, you'd run the very likely risk of having your dogs disturb the seed before it could get established. If you use sod, be sure that you apply sufficient water to allow it to establish before winter and try to minimize dog traffic if at all possible.