If your pup starts having sudden bladder issues or simply begins peeing everywhere, even though he’s properly potty trained, it is best to consult your vet. This might be happening for a number of reasons, but most of the time the condition can be treated with medication or modified training.
Submissive Urination
In the case of your pup, his superior is you and he is simply trying to let you know he is surrendering to your authority.
This might also happen when your dog is confronted with a bigger and more aggressive dog. In these situations the poor fellow is frightened and you should remove your dog from the possible treat which is causing him fear or stress.
Excitement
Some pooches start peeing when they are too excited. You should know that this is a matter of lack of control than a behavioral issue. Puppies who haven’t yet mastered bladder control will start peeing if something causes them to become excited.
Most puppies outgrow this cute but messy habit rather quickly, but if your pup continues to have this issue even after his puppyhood, talk to your vet about possible medicinal treatment.
Medical Issues
Infections, tumors or bladder stones could also be the reason. These more serious medical issues could cause your dog to feel like he has to go even when there’s nothing in his bladder, or they could make it difficult for your pooch to empty his bladder entirely, so the urine that is left behind night leak out even while he’s walking, sitting still or taking a nap.
Contact your vet immediately to run tests in order to pinpoint the exact cause of the problem.