I lost my Zuni about a month ago as well. A Bull Mastiff, a gigantic Teddy bear. She passed do to a bad fight & Old Age. I feel you man.
All that I can tell you is this: All Dogs Do Go To Heaven. Just pray to the saints to take care of your little buddy untill you have a chance to make it up there.
Me Personally, I pray for the saints period... That hound was always the Queen of the house, Took all the covers on the bed, & then most of the bed after that. A True Pirate.

Here's to all our Dogs who have preceeded us to those pearly Gates, Misti, Zuni, and everyone elses Little Buddies. May the Saints take good care of'em, & their heavenly Bowls never run Dry or go Empty!