Why dogs pee against pillars

Dogs urinate against pillars because they want to mark themselves. This is also the nature of dogs. The purpose of male dogs is generally to attract female dogs through the scent and signals they leave behind. On the other hand, when a dog smells the smell of other dogs when excreting, it will quickly pee in as wide a range as possible to cover other dogs' areas and tell other dogs that this place belongs to me.
Choose pillars to mark. In fact, they just want to find a higher place. The dog raises one leg to urinate not because it likes to be clean, but because it wants to pee higher, almost reaching their noses. The height makes it easier for similar people to smell it, and urinating higher helps the smell spread farther. In addition, dogs can judge each other's size by the urine height of the same kind. The higher the urine, the bigger the dog will appear.