I wouldn't medicate your dog with out seeing a vet first.  some pain releavers like the ones already spoked of can cause kidney damage at least thats what we were told by an emergency vet when we took my sisters staint bernard in for her growing pains in her rear legs

2 out of 3 of my females have sprayed. The best way to stop them from spraying is getting them spayed. After I got all my cats fixed both of the sprayers have stopped and they have never done it again. I was told by the vet that if they do continue after being fixed … Read more

Well it could also be a false pregnancy  my dachshund when through that a few times before I had to get her fixed because it started to make her sick    she started to go into heat and about 3 days after she started I found a litter of kittens in my backyard I took them … Read more