I've noticed the the "little brother" elephants really annoy the big sister while they seem to get along well with big brothers who ply and wrestle with them, i.e. head butts, etc. I saw another RU-vid video with a little brother head-butting his big sister and when she finally he'd-butte him back, HE HAD A FIT and state shaking his head and grabbing her trunk then burying his head in dirt/sand. Wow.
