Your vet can explain the options, but here’s the lowdown: communal cremation (ashes aren’t returned, cheapest), private cremation (you get the ashes back in an urn), or home burial (check local laws—some counties forbid it). If you choose burial, dig the hole at least three feet deep to keep scavengers away.
Some people opt for aquamation (water-based cremation) or even a pet funeral home. Yes, that is a real thing, and they will pick up your dog in a special vehicle, like a tiny hearse for a very good boy. It’s oddly comforting.
Don’t feel pressured to make a decision immediately. You can place your dog in a cool, quiet place—like a garage or basement—for up to 24 hours while you sort things out. Do not put them in a freezer, though—that can cause tissue damage and is just… weird.