Dogs mark their territory with a simple gesture of urination. But so do humans. We just use social contracts to reserve our spot.
The gentlemen who puts his jacket on the chair of an open table signals ownership. The order in which we stand in line delineates priority. So when we annex the table or cut the line we’re obviating any sense of prerogative.
Ownership is a right but it gets disrupted again and again because it’s equally arbitrary and temporary. Needless to say, we all can be assholes.