Too simple...while some mounting is an expression of dominance, mounting is also an expression of instinctually driven reproductive behavior and of course there are pleasurable sensations associated with it. Sometimes animals are just too dumb to distinguish which partner is appropriate for reproduction but it still can feel good.
All others use it as a way to show underlings who is boss
Your take on these two mounting behaviors?
>>Your take on these two mounting behaviors? <<
That animals are so stupid they will hump anything.