Each afternoon, the keepers provide the gorillas with a variety of fruits and vegetables. On one occasion, after Judy Sievert tossed an apple to Nina, it rolled away, leaving Nina sitting sadly instead of retrieving it. While Judy continued distributing food to the other gorillas, Nina remained forlorn without her apple.

Noticing Nina's distress, Judy decided to toss her another apple. This act of kindness prompted Nina to spring into action; she quickly picked up the new apple and then headed to retrieve the one that had rolled away. This moment highlights the emotional connections and behaviors of gorillas, illustrating their intelligence and social needs.