@Roberta,
one of my favourite times at the Toronto Zoo involved a baby elephant and a baby hippo, the two enclosures were near each other and at one point only a slatted fence separated them, the baby hippo was resting in the shade by the fence, the baby elephant picks up a stick and starts poking the baby hippo through the fence, baby hippo starts crying, mom comes running over starts bellowing, mom elephant comes over, takes stick away from her kid and pushes him away, the two moms make some noise at each other and then everything calms down
a few minutes later i notice that the baby elephant is slowly sidling his way over to the fence, grabs the stick, and away we go
kids are the same all over i guess