Some reasons your dog may be peeing everywhere include medical conditions, improper training, fear, or infrequent walks. If the pet is a puppy or a dog that is new to your home, you'll need to exercise some patience as some dogs take longer to train than others. If a housebroken pet has started peeing everywhere, you'll need to try to pinpoint a reason.
Common Reasons For Inappropriate Urination
Once your dog is properly housebroken, he shouldn't start urinating in the house unless there is an underlying reason. These may include:
Medical Conditions
This is a common cause of a trained dog to start peeing throughout the house. Medical conditions that can cause this behavior include urinary tract infections, kidney issues, bladder stones, diabetes, and certain injuries. In many cases, dogs will show no other symptoms, so you should make a vet appointment as soon as you notice that the dog is urinating in the house.
Submission
This is most common in puppies, but it can occur at any age. If someone startles the dog, reaches for, or scolds the dog, he may urinate out of fear or to show his submission.
Marking
You can recognize marking as it tends to be very small amounts of urine in certain places. Spaying or neutering can help, and the earlier you fix your pet, the less likely they are to mark.
Infrequent Walks
An easy-to-fix issue is that your dog simply isn't being let out enough. If you're gone for 8+ hours a day, your dog may not always be able to hold it until you return home. If putting in a doggy door is not a feasible solution, consider hiring a dog walker to stop by each day. Until you can figure out and address the reason, you'll want to be sure to use an enzymatic cleaner to fully eliminate the odor left behind by the urine. If you don't, the dog will be attracted to urinate in that spot again—as may other of your household pets.
The good news is that the behavior can usually be successfully addressed either by the owner, the vet, or, in some cases, an animal behaviorist.