I need help with my dog who is weeing all the time. He is 2 1/2 years old. He wees everytime he is left in a room alone. help please
Sounds like separation anxiety... definitely try crate training. Keep him in the crate whenever you are not home or have to leave him in a room by himself without the option of following you. This is a quick fix, but to get to the deeper issues of separation anxiety also practice authority training.
Training your dog is the best way to stop it from peeing on the floor all the time. When a dog is trained, it will know the time to pee and where it can go to ease itself. You should also avoid leaving the dog unattended.
I would say to make sure that you take your dog out to use the bathroom. Also try a vet. If he is that old and just started this there might be a problem.