Every once and a while, our neighbor’s horses escape their pastures and come over to the sanctuary. I like to watch the look on their faces when they see the chimps for the first time. It goes from interested to confused to frightened in about five seconds.
I think the chimps enjoy engaging in territorial behavior from time to time. CSNW is different than most other chimpanzee sanctuaries in that we have only one group and they are together at all times. They never see or hear other chimpanzees and therefore they rarely have a reason to defend their territory as a group or to patrol the boundaries of their enclosure. But occasional visits from wild deer, stray dogs, and escaped horses and cattle keep them on their toes.
Jamie, being the alpha that she is, seems to live for this kind of thing.