I use Restoration with older quilts, or Orvus paste--as directed. Do not use the dryer, lay flat (so the stitches don't break!) and run a fan over it. If it's a poly batting, you may have ruined in with high heat. But if its very old (pre-1950's) then it probably isn't poly batting. Often quilts feel less "fluffy" when they have recently been cleaned--and soften up with some use. Just like clothing that is dried out on the clothes line.
Tip--keep that puppy off the quilt--even if it doesn't pee again on it, all that hand quilting (and possibly old fabric) is to delicate for a dog's nails. So either the dog or the quilt need to come off the bed/sofa/whatever!