In this posting, you have three different sets of interactions — each row across is a different set. In the first row, the dominant sibling approaches the more submissive guy. He displays his dominance initially by urinating. Then he approaches as overpowers the submissive guy. In the last slide of the first row, notice that Mom is calmly watching from the sidelines.
In the second row there is a display of oneupmanship by the dominant sibling. But then they seem to hunt together: each totally interested in what the other is doing. In the last photo of the second row they look like they are hunting peacefully side by side.
In the bottom row, the sequence begins with all three coyotes watching an onlooker and a dog-walker team in the distance. Then the dominating sibling, with hackles and tail up, approaches the less dominant fellow, who, in the last slide, runs off with head down and ears back.