They take a dog catcher, looks like this.
Basically a stick with a loop on the end. Then they put it around the dogs neck, they do it to cats as well, and lift the dog into the air by his neck. Now keep in mind, the animal is very much alive and healthy and aware, not sedated. Then on the other side of the room that have a big boiling cauldron. Looks kinda like this.
Then they dip the live dog into the boiling water. Not long enough to kill him, they aren't trying to kill him yet, they just want to boil him a little bit. When this part of the agonizing procedure is done they have succeeded in loosening the dog's skin just enough that they can grab its skin and pull it all off in one big piece like a sock. Literally, they just de-skin the animal in one big yank. The horrifying part, if what I have told you is not already horrifying enough, is that the dog is still alive. He's been boiled, and had all his skin ripped off, and now he's standing there looking at you. Then the butchering phase starts and I won't even continue.
I've seen it done on video, against my wishes, and it scarred my mind for life. I'll take that to my grave. I had a friend that said check this out and I didn't know what it was. He almost got a legit ass beating that day and if we were'nt such good friends he would have, or I would have, but someone is getting an ass beating when that video is pulled out. So if you think its alright to eat dogs, fine, but I thought you should at least know one of the preferred methods.