Do dogs urinate to mark territory?

Yes, dogs urinate to mark territory. They do this by spraying urine on vertical surfaces, such as trees, walls, and fire hydrants. This is a way for dogs to communicate with each other and to let other dogs know that this is their territory. Dogs may also urinate on objects that they feel threatened by, such as people or other animals. This is a way for dogs to show that they are not afraid and that they are willing to defend their territory.