Get your poor dog to the Vet, ASAP!!!
Myold dog has swollen area in neck, stomach and legs. He vomit last week he ate his food very normal, he doesn't vomit anymore but he always lay down. Yesterday, while he was lying something watery in his butt or genital area. what could this be?
There are several things it could be. The only way to know for sure is to get him to the vet. I would suggest sooner rather than later.
Please be a responsible pet owner and take your dog to a vet for a proper examination. There is no way to couch diagnose what sounds like a very serious condition .. Until you do, your dog will continue to suffer. Please don't victimize your dog .. Get him the help he needs .. And the sooner the better