Quoting FaithLovesBaby:" If he's peeing THAT much, there might be something wrong. Take him to a vet. That could be a sign of a lot of different things"
Quoting InkDMomma:" It sounds like it would be better for him and for you if he went to a rescue group. There are tons of them, start looking around."
Quoting XDaniGirl:" Omg!! My husbands dog does the same thing!!!! He pees on EVERYTHING!!!! He's puppy pad trained and knows ... [snip!] ... better but I know chihuahuas get aggressive the older they get so I feel like we are bout to start back tracking with him"