Why Dogs Mark
Dogs “mark” to establish territory. Male dogs lift their legs to mark, usually selecting upright ‘targets.’ Each dog has a unique smell that the other dogs' sensitive noses can identify. So these marks act as a personal calling card, telling other dogs he has spoken for this territory.

Why Correct Marking Behavior?
There are two good reasons to put a stop to marking:

• Dogs who mark frequently often have an attitude problem. Getting control of the marking often helps you get control over other problems as well.
• If you live in an area with a lot of dogs, marking can lead to conflict. When dogs who have claimed the same area meet on the street, each dog can try to drive off the “intruder.”

How to Correct Marking
In the best of all worlds, don’t let your dog start. But if you have, the sooner you retrain your dog, the easier it will be.

• First, neuter your male dog. Doing so may help minimize problem marking.
• Encourage your dog to eliminate in one spot in your yard before you start your walk. Do this by walking back and forth in that area and encourage with "Go potty". When he urinates, praise him then go for a larger stroll. This rewards quick emptying with exploration.
• If your dog tries to mark during your walk, keep walking while saying, "Let’s go, Heel!" in a happy tone of voice. If you keep moving and praise him for coming with you, you can prevent persistent lifting entirely.
• If your dog is lifting his leg in the house, please contact your veterinarian, qualified dog trainer or behaviorist.