I am amazed that I had the opportunity to shoot this sequence (as always, my trusty pocket-cellphone camera served as instrumentation). It was as if the goats at Riverdale Farm, not far from my home, had rehearsed a little skit for my entertainment. First they did the routine in which the larger goat pretends he is pouncing on the smaller one, but backs off at the last second; and they repeated it at four different angles, without any intervening pause, as if they wanted to be sure I saw it. Then, as if to show it was all in good fun, they did the head-butting number with the smaller goat in command (I think that was 'fixed'). The Farm had very few visitors that day, owing to the pandemic and to the incipient winter weather.
It might take a lifetime of observing goats to see the likes again! or not! But as a pandemic precaution, the Farm is now 'closed' to visitors, as the coronavirus resurges; so further displays of this type, should they occur, cannot be observed by the general public.