The cliche understanding is that dogs mark their territory with pee. At times I’ve been on walks with family and friends with half a dozen dogs. There have been occasions where they form a line just to pee in the same spot.
So how does the ownership work? Is it like a co-op? Last one to pee wins?
By lifting their legs while peeing also communicates a height. Bigger the dog higher the pee. It’s a way of courting and announcing their presence too. Just like bragging with photos and recent location checkins